diff --git a/source/blood/src/controls.cpp b/source/blood/src/controls.cpp
index f6dc157ea..c2784f905 100644
--- a/source/blood/src/controls.cpp
+++ b/source/blood/src/controls.cpp
@@ -50,19 +50,7 @@ void GameInterface::GetInput(InputPacket* packet, ControlInfo* const hidInput)
     processMovement(&input, &gInput, hidInput, scaleAdjust);
 
     // Handle crouch toggling.
-    if (buttonMap.ButtonDown(gamefunc_Toggle_Crouch) || pPlayer->crouch_toggle)
-    {
-        gInput.actions |= SB_CROUCH;
-    }
-    if (buttonMap.ButtonDown(gamefunc_Toggle_Crouch))
-    {
-        pPlayer->crouch_toggle = !pPlayer->crouch_toggle;
-        buttonMap.ClearButton(gamefunc_Toggle_Crouch);
-    }
-    if (buttonMap.ButtonDown(gamefunc_Crouch) || buttonMap.ButtonDown(gamefunc_Jump))
-    {
-        pPlayer->crouch_toggle = false;
-    }
+    checkCrouchToggle(&gInput, &pPlayer->crouch_toggle);
 
     if (!cl_syncinput && gamestate == GS_LEVEL)
     {
diff --git a/source/core/gameinput.cpp b/source/core/gameinput.cpp
index 431b8c720..eb7cbe8b2 100644
--- a/source/core/gameinput.cpp
+++ b/source/core/gameinput.cpp
@@ -353,6 +353,31 @@ void applylook(PlayerAngle* angle, float const avel, ESyncBits* actions, double
 	}
 }
 
+//---------------------------------------------------------------------------
+//
+// Crouch toggle functionality used within Duke/RR, Blood and Exhumed.
+//
+//---------------------------------------------------------------------------
+
+void checkCrouchToggle(InputPacket* inputBuffer, bool* crouch_toggle, bool const crouchable, bool const forceoff)
+{
+    if (buttonMap.ButtonDown(gamefunc_Toggle_Crouch) || *crouch_toggle)
+    {
+        inputBuffer->actions |= SB_CROUCH;
+    }
+
+	if (buttonMap.ButtonDown(gamefunc_Toggle_Crouch))
+	{
+		*crouch_toggle = !*crouch_toggle && crouchable;
+
+		if (crouchable)
+			buttonMap.ClearButton(gamefunc_Toggle_Crouch);
+	}
+
+	if (buttonMap.ButtonDown(gamefunc_Crouch) || buttonMap.ButtonDown(gamefunc_Jump) || forceoff)
+		*crouch_toggle = false;
+}
+
 FSerializer& Serialize(FSerializer& arc, const char* keyname, PlayerAngle& w, PlayerAngle* def)
 {
 	if (arc.BeginObject(keyname))
diff --git a/source/core/gameinput.h b/source/core/gameinput.h
index 23f21659a..c8617dcc0 100644
--- a/source/core/gameinput.h
+++ b/source/core/gameinput.h
@@ -195,4 +195,4 @@ FSerializer& Serialize(FSerializer& arc, const char* keyname, PlayerHorizon& w,
 void processMovement(InputPacket* currInput, InputPacket* inputBuffer, ControlInfo* const hidInput, double const scaleAdjust, int const drink_amt = 0, bool const allowstrafe = true, double const turnscale = 1);
 void sethorizon(fixedhoriz* horiz, float const horz, ESyncBits* actions, double const scaleAdjust);
 void applylook(PlayerAngle* angle, float const avel, ESyncBits* actions, double const scaleAdjust, bool const crouching);
-
+void checkCrouchToggle(InputPacket* inputBuffer, bool* crouch_toggle, bool const crouchable = true, bool const forceoff = false);
diff --git a/source/exhumed/src/input.cpp b/source/exhumed/src/input.cpp
index 73b12f5bf..83f807924 100644
--- a/source/exhumed/src/input.cpp
+++ b/source/exhumed/src/input.cpp
@@ -121,19 +121,7 @@ void GameInterface::GetInput(InputPacket* packet, ControlInfo* const hidInput)
     }
 
     // Handle crouch toggling.
-    if (buttonMap.ButtonDown(gamefunc_Toggle_Crouch) || pPlayer->crouch_toggle)
-    {
-        localInput.actions |= SB_CROUCH;
-    }
-    if (buttonMap.ButtonDown(gamefunc_Toggle_Crouch))
-    {
-        pPlayer->crouch_toggle = !pPlayer->crouch_toggle;
-        buttonMap.ClearButton(gamefunc_Toggle_Crouch);
-    }
-    if (buttonMap.ButtonDown(gamefunc_Crouch) || buttonMap.ButtonDown(gamefunc_Jump))
-    {
-        pPlayer->crouch_toggle = false;
-    }
+    checkCrouchToggle(&localInput, &pPlayer->crouch_toggle);
 
     if (!cl_syncinput)
     {
diff --git a/source/games/duke/src/input.cpp b/source/games/duke/src/input.cpp
index e85ddd888..af615b5fe 100644
--- a/source/games/duke/src/input.cpp
+++ b/source/games/duke/src/input.cpp
@@ -536,38 +536,11 @@ static void processInputBits(player_struct *p, ControlInfo* const hidInput)
 		if (buttonMap.ButtonDown(gamefunc_Quick_Kick)) // this shares a bit with another function so cannot be in the common code.
 			loc.actions |= SB_QUICK_KICK;
 
-		if (buttonMap.ButtonDown(gamefunc_Toggle_Crouch) || p->crouch_toggle)
-		{
-			loc.actions |= SB_CROUCH;
-		}
 		if ((isRR() && p->drink_amt > 88)) loc.actions |= SB_LOOK_LEFT;
 		if ((isRR() && p->drink_amt > 99)) loc.actions |= SB_LOOK_DOWN;
 	}
 }
 
-//---------------------------------------------------------------------------
-//
-// split off so that it can later be integrated into the other games more easily.
-//
-//---------------------------------------------------------------------------
-
-static void checkCrouchToggle(player_struct* p)
-{
-	int const sectorLotag = p->cursectnum != -1 ? sector[p->cursectnum].lotag : 0;
-	int const crouchable = sectorLotag != ST_2_UNDERWATER && (sectorLotag != ST_1_ABOVE_WATER || p->spritebridge);
-
-	if (buttonMap.ButtonDown(gamefunc_Toggle_Crouch))
-	{
-		p->crouch_toggle = !p->crouch_toggle && crouchable;
-
-		if (crouchable)
-			buttonMap.ClearButton(gamefunc_Toggle_Crouch);
-	}
-
-	if (buttonMap.ButtonDown(gamefunc_Crouch) || buttonMap.ButtonDown(gamefunc_Jump) || p->jetpack_on || (!crouchable && p->on_ground))
-		p->crouch_toggle = 0;
-}
-
 //---------------------------------------------------------------------------
 //
 // 
@@ -900,7 +873,12 @@ void GameInterface::GetInput(InputPacket* packet, ControlInfo* const hidInput)
 	{
 		processInputBits(p, hidInput);
 		processMovement(&input, &loc, hidInput, scaleAdjust, p->drink_amt);
-		checkCrouchToggle(p);
+
+		// Handle crouch toggling.
+		int const sectorLotag = p->cursectnum != -1 ? sector[p->cursectnum].lotag : 0;
+		bool const crouchable = sectorLotag != ST_2_UNDERWATER && (sectorLotag != ST_1_ABOVE_WATER || p->spritebridge);
+		checkCrouchToggle(&loc, &p->crouch_toggle, crouchable, p->jetpack_on || (!crouchable && p->on_ground));
+
 		FinalizeInput(myconnectindex, input, false);
 	}
 
diff --git a/source/games/duke/src/types.h b/source/games/duke/src/types.h
index 0d0aa363f..a30410e20 100644
--- a/source/games/duke/src/types.h
+++ b/source/games/duke/src/types.h
@@ -278,7 +278,7 @@ struct player_struct
 	double vehForwardScale, vehReverseScale, MotoSpeed;
 	bool vehTurnLeft, vehTurnRight;
 
-	int8_t crouch_toggle;
+	bool crouch_toggle;
 
 	// input stuff.
 	InputPacket sync;