diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index 19f9de486d..7ef6f56839 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -761,35 +761,6 @@ protected:
 private:
 	DLevelScript();
 
-	int getbyte(int *&pc)
-	{
-		CheckInstructionPointer(pc);
-
-		int res = *(uint8_t *)pc;
-		pc = (int *)((uint8_t *)pc+1);
-		return res;
-	}
-
-	int getshort(int *&pc)
-	{
-		CheckInstructionPointer(pc);
-
-		int res = LittleShort( *(int16_t *)pc);
-		pc = (int *)((uint8_t *)pc+2);
-		return res;
-	}
-
-	void CheckInstructionPointer(int *pc) const
-	{
-		const uint32_t offset = activeBehavior->PC2Ofs(pc);
-		const uint32_t size = activeBehavior->GetDataSize();
-
-		if (offset >= size)
-		{
-			I_Error("Out of bounds instruction pointer in ACS VM");
-		}
-	}
-
 	friend class DACSThinker;
 };
 
@@ -6925,7 +6896,7 @@ enum
 };
 
 
-#define NEXTWORD	(CheckInstructionPointer(pc), LittleLong(*pc++))
+#define NEXTWORD	(LittleLong(*pc++))
 #define NEXTBYTE	(fmt==ACS_LittleEnhanced?getbyte(pc):NEXTWORD)
 #define NEXTSHORT	(fmt==ACS_LittleEnhanced?getshort(pc):NEXTWORD)
 #define STACK(a)	(Stack[sp - (a)])
@@ -6933,6 +6904,20 @@ enum
 // Direct instructions that take strings need to have the tag applied.
 #define TAGSTR(a)	(a|activeBehavior->GetLibraryID())
 
+inline int getbyte (int *&pc)
+{
+	int res = *(uint8_t *)pc;
+	pc = (int *)((uint8_t *)pc+1);
+	return res;
+}
+
+inline int getshort (int *&pc)
+{
+	int res = LittleShort( *(int16_t *)pc);
+	pc = (int *)((uint8_t *)pc+2);
+	return res;
+}
+
 static bool CharArrayParms(int &capacity, int &offset, int &a, FACSStackMemory& Stack, int &sp, bool ranged)
 {
 	if (ranged)