diff --git a/source/exhumed/src/anubis.cpp b/source/exhumed/src/anubis.cpp
index c3892fd31..57becb13c 100644
--- a/source/exhumed/src/anubis.cpp
+++ b/source/exhumed/src/anubis.cpp
@@ -248,6 +248,7 @@ void FuncAnubis(int a, int nDamage, int nRun)
                                 break; // only break if condition met
                             }
                             // else we fall through to 0x8000
+                            fallthrough__;
                         }
                         case 0x8000:
                         {
@@ -406,6 +407,7 @@ void FuncAnubis(int a, int nDamage, int nRun)
             }
 
             nDamage = runlist_CheckRadialDamage(nSprite);
+            fallthrough__;
         }
         case 0x80000:
         {
diff --git a/source/exhumed/src/fish.cpp b/source/exhumed/src/fish.cpp
index 550eee688..60d690589 100644
--- a/source/exhumed/src/fish.cpp
+++ b/source/exhumed/src/fish.cpp
@@ -351,6 +351,7 @@ void FuncFish(int a, int nDamage, int nRun)
                 FishList[nFish].field_C = 10;
             }
             // fall through
+            fallthrough__;
         }
         case 0x80000:
         {
diff --git a/source/exhumed/src/gun.cpp b/source/exhumed/src/gun.cpp
index 4c084a4a5..436d7b3cc 100644
--- a/source/exhumed/src/gun.cpp
+++ b/source/exhumed/src/gun.cpp
@@ -827,6 +827,7 @@ loc_flag:
                         }
 
                         // fall through to case 1 (kWeaponPistol)
+                        fallthrough__;
                     }
                 }
 
@@ -836,6 +837,7 @@ loc_flag:
                         nQuake[nPlayer] = 128;
                     }
                     // fall through
+                    fallthrough__;
                 }
                 case kWeaponPistol:
                 {
diff --git a/source/exhumed/src/init.cpp b/source/exhumed/src/init.cpp
index 7d36a24ab..e48fb4817 100644
--- a/source/exhumed/src/init.cpp
+++ b/source/exhumed/src/init.cpp
@@ -481,6 +481,7 @@ void ProcessSpriteTag(short nSprite, short lotag, short hitag)
         {
             nVal = 3 * (hitag / 3);
             // fall through to 6,7 etc
+            fallthrough__;
         }
         case 6:
         case 7:
diff --git a/source/exhumed/src/lion.cpp b/source/exhumed/src/lion.cpp
index 0bfe7517b..43a0a8bd5 100644
--- a/source/exhumed/src/lion.cpp
+++ b/source/exhumed/src/lion.cpp
@@ -152,6 +152,7 @@ void FuncLion(int a, int nDamage, int nRun)
         {
             nDamage = runlist_CheckRadialDamage(nSprite);
             // now fall through to 0x80000
+            fallthrough__;
         }
         case 0x80000:
         {
diff --git a/source/exhumed/src/mummy.cpp b/source/exhumed/src/mummy.cpp
index a014aa6a9..dda748726 100644
--- a/source/exhumed/src/mummy.cpp
+++ b/source/exhumed/src/mummy.cpp
@@ -479,6 +479,7 @@ void FuncMummy(int a, int nDamage, int nRun)
 
             nDamage = runlist_CheckRadialDamage(nSprite);
             // fall through to 0x80000
+            fallthrough__;
         }
         case 0x80000:
         {
diff --git a/source/exhumed/src/object.cpp b/source/exhumed/src/object.cpp
index 4a085abad..f2763f16d 100644
--- a/source/exhumed/src/object.cpp
+++ b/source/exhumed/src/object.cpp
@@ -1791,6 +1791,7 @@ void FuncEnergyBlock(int a, int nDamage, int nRun)
             }
 
             // fall through to case 0x80000
+            fallthrough__;
         }
 
         case 0x80000:
diff --git a/source/exhumed/src/player.cpp b/source/exhumed/src/player.cpp
index 287edb6b2..c9688ddd1 100644
--- a/source/exhumed/src/player.cpp
+++ b/source/exhumed/src/player.cpp
@@ -1103,6 +1103,7 @@ void FuncPlayer(int pA, int nDamage, int nRun)
 
             nSprite2 = nRadialOwner;
             // fall through to case 0x80000
+            fallthrough__;
         }
 
         case 0x80000:
diff --git a/source/exhumed/src/rat.cpp b/source/exhumed/src/rat.cpp
index c8547f0a5..791961c3d 100644
--- a/source/exhumed/src/rat.cpp
+++ b/source/exhumed/src/rat.cpp
@@ -199,6 +199,7 @@ void FuncRat(int a, int nDamage, int nRun)
         {
             nDamage = runlist_CheckRadialDamage(nSprite);
             // fall through to 0x80000
+            fallthrough__;
         }
         case 0x80000:
         {
diff --git a/source/exhumed/src/rex.cpp b/source/exhumed/src/rex.cpp
index 9e56f3256..b94fd3f44 100644
--- a/source/exhumed/src/rex.cpp
+++ b/source/exhumed/src/rex.cpp
@@ -156,6 +156,7 @@ void FuncRex(int a, int nDamage, int nRun)
                 nDamage = runlist_CheckRadialDamage(nSprite);
             }
             // fall through to case 0x80000
+            fallthrough__;
         }
 
         case 0x80000:
diff --git a/source/exhumed/src/roach.cpp b/source/exhumed/src/roach.cpp
index f3097c402..138c8d347 100644
--- a/source/exhumed/src/roach.cpp
+++ b/source/exhumed/src/roach.cpp
@@ -163,6 +163,7 @@ void FuncRoach(int a, int nDamage, int nRun)
         case 0xA0000: // fall through to next case
         {
             nDamage = runlist_CheckRadialDamage(nSprite);
+            fallthrough__;
         }
         case 0x80000:
         {
diff --git a/source/exhumed/src/runlist.cpp b/source/exhumed/src/runlist.cpp
index fe0c6fbe0..b29587170 100644
--- a/source/exhumed/src/runlist.cpp
+++ b/source/exhumed/src/runlist.cpp
@@ -1311,6 +1311,7 @@ void runlist_ProcessSectorTag(int nSector, int lotag, int hitag)
             runlist_AddRunRec(sRunChannels[nChannel].a, nSwitch);
 
             // Fall through to case 62
+            fallthrough__;
         }
         case 62:
         {
diff --git a/source/exhumed/src/scorp.cpp b/source/exhumed/src/scorp.cpp
index 4d3633f97..b284405d2 100644
--- a/source/exhumed/src/scorp.cpp
+++ b/source/exhumed/src/scorp.cpp
@@ -159,6 +159,7 @@ void FuncScorp(int a, int nDamage, int nRun)
                 return;
             }
             // else fall through to case 0x80000
+            fallthrough__;
         }
 
         case 0x80000:
diff --git a/source/exhumed/src/set.cpp b/source/exhumed/src/set.cpp
index 9afc88813..4c6034468 100644
--- a/source/exhumed/src/set.cpp
+++ b/source/exhumed/src/set.cpp
@@ -250,6 +250,7 @@ void FuncSet(int a, int nDamage, int nRun)
                 nDamage = runlist_CheckRadialDamage(nSprite);
                 // fall through to case 0x80000
             }
+            fallthrough__;
         }
 
         case 0x80000:
diff --git a/source/exhumed/src/spider.cpp b/source/exhumed/src/spider.cpp
index b93d2ba25..e91f5c289 100644
--- a/source/exhumed/src/spider.cpp
+++ b/source/exhumed/src/spider.cpp
@@ -212,6 +212,7 @@ goto case_3;
                             SpiderList[nSpider].nAction = 1;
                         }
                         //break; // fall through
+                        fallthrough__;
                     }
                     case 3:
                     {
@@ -388,6 +389,7 @@ case_3:
 
             nDamage = runlist_CheckRadialDamage(nSprite);
             // fall through
+            fallthrough__;
         }
 
         case 0x80000:
diff --git a/source/exhumed/src/wasp.cpp b/source/exhumed/src/wasp.cpp
index f7daca650..57ddd6824 100644
--- a/source/exhumed/src/wasp.cpp
+++ b/source/exhumed/src/wasp.cpp
@@ -192,6 +192,7 @@ void FuncWasp(int a, int nDamage, int nRun)
 
             nDamage = runlist_CheckRadialDamage(nSprite);
             // fall through to case 0x80000
+            fallthrough__;
         }
 
         case 0x80000: