diff --git a/source/blood/src/nnexts.cpp b/source/blood/src/nnexts.cpp
index 000d6725c..13e4d6b97 100644
--- a/source/blood/src/nnexts.cpp
+++ b/source/blood/src/nnexts.cpp
@@ -326,7 +326,7 @@ void nnExtInitModernStuff(bool bSaveLoad) {
 
             // the following trigger flags are sensless to have together
             if ((pXSprite->Touch && (pXSprite->Proximity || pXSprite->Sight) && pXSprite->DudeLockout)
-                    || pXSprite->Touch && pXSprite->Proximity && !pXSprite->Sight) pXSprite->Touch = false;
+                    || (pXSprite->Touch && pXSprite->Proximity && !pXSprite->Sight)) pXSprite->Touch = false;
 
             if (pXSprite->Proximity && pXSprite->Sight && pXSprite->DudeLockout)
                 pXSprite->Proximity = false;
@@ -1734,7 +1734,7 @@ void useEffectGen(XSPRITE* pXSource, spritetype* pSprite) {
                 break;
             case 3:
             case 4:
-                if (!sectRangeIsFine(pSprite->sectnum)) fallthrough__;
+                // if (!sectRangeIsFine(pSprite->sectnum)) fallthrough__; Code is wrong
                 pos = (pXSource->data4 == 3) ? sector[pSprite->sectnum].floorz : sector[pSprite->sectnum].ceilingz;
                 break;
             default:
diff --git a/source/duke3d/src/gamedef.cpp b/source/duke3d/src/gamedef.cpp
index 5ec5bdc5f..dbffb79e6 100644
--- a/source/duke3d/src/gamedef.cpp
+++ b/source/duke3d/src/gamedef.cpp
@@ -2094,11 +2094,6 @@ void C_UndefineLevel(int32_t vol, int32_t lev)
     gmap.designerTime = 0;
 }
 
-LUNATIC_EXTERN int32_t C_SetDefName(const char *name)
-{
-	return 0;
-}
-
 defaultprojectile_t DefaultProjectile;
 
 EDUKE32_STATIC_ASSERT(sizeof(projectile_t) == sizeof(DefaultProjectile));
diff --git a/source/duke3d/src/savegame.cpp b/source/duke3d/src/savegame.cpp
index bc98acb2c..eca765668 100644
--- a/source/duke3d/src/savegame.cpp
+++ b/source/duke3d/src/savegame.cpp
@@ -1045,20 +1045,7 @@ static uint32_t calcsz(const dataspec_t *spec)
     return dasiz;
 }
 
-#ifdef USE_OPENGL
-static void sv_prespriteextsave();
-static void sv_postspriteext();
-#endif
-#if defined LUNATIC
-// Recreate Lua state.
-// XXX: It may matter a great deal when this is run from if the Lua code refers
-// to C-side data at file scope. Such usage is strongly discouraged though.
-static void sv_create_lua_state(void)
-{
-    El_CreateGameState();
-    G_PostCreateGameState();
-}
-#endif
+
 static void sv_postactordata();
 static void sv_preanimateptrsave();
 static void sv_postanimateptr();
diff --git a/source/duke3d/src/text.h b/source/duke3d/src/text.h
index aeda2952d..f367fed3a 100644
--- a/source/duke3d/src/text.h
+++ b/source/duke3d/src/text.h
@@ -34,9 +34,6 @@ extern int32_t user_quote_time[MAXUSERQUOTES];
 extern int32_t minitext_lowercase;
 extern int32_t minitext_yofs;
 
-enum {
-};
-
 extern int32_t minitext_(int32_t x, int32_t y, const char *t, int32_t s, int32_t p, int32_t sb);
 extern void menutext_(int32_t x, int32_t y, int32_t s, char const *t, int32_t o, int32_t f);
 extern void captionmenutext(int32_t x, int32_t y, char const *t);
diff --git a/source/rr/src/d_menu.cpp b/source/rr/src/d_menu.cpp
index 73948ea54..50bb444de 100644
--- a/source/rr/src/d_menu.cpp
+++ b/source/rr/src/d_menu.cpp
@@ -371,7 +371,7 @@ protected:
 
 class RedneckMainMenu : public RedneckListMenu
 {
-	virtual void Init(DMenu* parent = NULL, FListMenuDescriptor* desc = NULL)
+	virtual void Init(DMenu* parent = NULL, FListMenuDescriptor* desc = NULL) override
 	{
 		RedneckListMenu::Init(parent, desc);
 		Menu_DHLeaonardHeadReset();
diff --git a/source/rr/src/net.cpp b/source/rr/src/net.cpp
index 403280497..4796c3e0f 100644
--- a/source/rr/src/net.cpp
+++ b/source/rr/src/net.cpp
@@ -2445,6 +2445,9 @@ void Net_Disconnect(void)
                 myconnectindex = screenpeek = 0;
                 G_BackToMenu();
                 break;
+					
+			default:
+				break;
             }
         }
 
@@ -2474,6 +2477,8 @@ void Net_Disconnect(void)
                 if (event.packet)
                     enet_packet_destroy(event.packet);
                 break;
+			default:
+				break;
             }
         }
         enet_host_destroy(g_netServer);
diff --git a/source/rr/src/player.cpp b/source/rr/src/player.cpp
index d182bd183..066b98ded 100644
--- a/source/rr/src/player.cpp
+++ b/source/rr/src/player.cpp
@@ -881,7 +881,7 @@ growspark_rr:
                 vel = 300;
                 startPos.z -= (15<<8);
             }
-            else if (projecTile == UWHIP)
+            else //if (projecTile == UWHIP)
             {
                 vel = 300;
                 startPos.z += (4<<8);
@@ -7213,7 +7213,7 @@ void P_ProcessInput(int playerNum)
             }
             else if (pPlayer->moto_speed >= 20 && pPlayer->on_ground == 1 && (pPlayer->moto_on_mud || pPlayer->moto_on_oil))
             {
-                short var9c, vara0, vara4;
+                short var9c, vara0, vara4 = 0;
                 var9c = pPlayer->moto_speed;
                 vara0 = fix16_to_int(pPlayer->q16ang);
                 var84 = krand2()&1;
diff --git a/source/rr/src/savegame.cpp b/source/rr/src/savegame.cpp
index a5636d885..996ec4b0f 100644
--- a/source/rr/src/savegame.cpp
+++ b/source/rr/src/savegame.cpp
@@ -794,10 +794,6 @@ static uint32_t calcsz(const dataspec_t *spec)
     return dasiz;
 }
 
-#ifdef USE_OPENGL
-static void sv_prespriteextsave();
-static void sv_postspriteext();
-#endif
 static void sv_postactordata();
 static void sv_preanimateptrsave();
 static void sv_postanimateptr();
diff --git a/source/rr/src/sounds.cpp b/source/rr/src/sounds.cpp
index 400ed8847..6bd65d537 100644
--- a/source/rr/src/sounds.cpp
+++ b/source/rr/src/sounds.cpp
@@ -34,7 +34,7 @@ class DukeSoundEngine : public SoundEngine
 {
     // client specific parts of the sound engine go in this class.
     void CalcPosVel(int type, const void* source, const float pt[3], int channum, int chanflags, FSoundID chanSound, FVector3* pos, FVector3* vel, FSoundChan* chan) override;
-    TArray<uint8_t> ReadSound(int lumpnum);
+    TArray<uint8_t> ReadSound(int lumpnum) override;
 
 public:
     DukeSoundEngine()