diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index 03de8b3dfd..0a8eef879c 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -1873,7 +1873,7 @@ FBehavior::FBehavior (int lumpnum, FileReader * fr, int len)
 				funcm->HasReturnValue = funcf->HasReturnValue;
 				funcm->ImportNum = funcf->ImportNum;
 				funcm->LocalCount = funcf->LocalCount;
-				funcm->Address = funcf->Address;
+				funcm->Address = LittleLong(funcf->Address);
 			}
 		}
 
@@ -2058,7 +2058,7 @@ FBehavior::FBehavior (int lumpnum, FileReader * fr, int len)
 			const char *const parse = (char *)&chunk[2];
 			DWORD i;
 
-			for (i = 0; i < chunk[1]; )
+			for (i = 0; i < LittleLong(chunk[1]); )
 			{
 				if (parse[i])
 				{
@@ -2351,7 +2351,7 @@ void FBehavior::LoadScriptsDirectory ()
 	scripts.b = FindChunk (MAKE_ID('S','F','L','G'));
 	if (scripts.dw != NULL)
 	{
-		max = scripts.dw[1] / 4;
+		max = LittleLong(scripts.dw[1]) / 4;
 		scripts.dw += 2;
 		for (i = max; i > 0; --i, scripts.w += 2)
 		{
@@ -2367,7 +2367,7 @@ void FBehavior::LoadScriptsDirectory ()
 	scripts.b = FindChunk (MAKE_ID('S','V','C','T'));
 	if (scripts.dw != NULL)
 	{
-		max = scripts.dw[1] / 4;
+		max = LittleLong(scripts.dw[1]) / 4;
 		scripts.dw += 2;
 		for (i = max; i > 0; --i, scripts.w += 2)
 		{
@@ -2681,7 +2681,7 @@ BYTE *FBehavior::FindChunk (DWORD id) const
 		{
 			return chunk;
 		}
-		chunk += ((DWORD *)chunk)[1] + 8;
+		chunk += LittleLong(((DWORD *)chunk)[1]) + 8;
 	}
 	return NULL;
 }
@@ -2689,14 +2689,14 @@ BYTE *FBehavior::FindChunk (DWORD id) const
 BYTE *FBehavior::NextChunk (BYTE *chunk) const
 {
 	DWORD id = *(DWORD *)chunk;
-	chunk += ((DWORD *)chunk)[1] + 8;
+	chunk += LittleLong(((DWORD *)chunk)[1]) + 8;
 	while (chunk != NULL && chunk < Data + DataSize)
 	{
 		if (((DWORD *)chunk)[0] == id)
 		{
 			return chunk;
 		}
-		chunk += ((DWORD *)chunk)[1] + 8;
+		chunk += LittleLong(((DWORD *)chunk)[1]) + 8;
 	}
 	return NULL;
 }