diff --git a/libmacos/SerGetBuf.c b/libmacos/SerGetBuf.c
index f775833..de9dc37 100644
--- a/libmacos/SerGetBuf.c
+++ b/libmacos/SerGetBuf.c
@@ -21,7 +21,7 @@ OSErr SerGetBuf(short refNum, long *count)
 	
 	res = PBStatusSync((ParmBlkPtr)&param);
 
-	*count = *(long*)param.csParam;
+	*count = param.csParamLong;
 
 	return res;
 }
diff --git a/libmacos/macos/files.h b/libmacos/macos/files.h
index 8ddf2bb..576df36 100644
--- a/libmacos/macos/files.h
+++ b/libmacos/macos/files.h
@@ -48,7 +48,11 @@ struct CntrlParam {
 	COMMON_PARAMS
 	int16_t			ioCRefNum;
 	int16_t			csCode;
-	int16_t			csParam[11];
+	union {
+		int16_t			csParam[11];
+		long			csParamLong;
+		void *			csParamPtr;
+	};
 };
 typedef struct CntrlParam CntrlParam;
 typedef CntrlParam* CntrlParamPtr;
diff --git a/libmacos/macos/video.h b/libmacos/macos/video.h
index 54015f5..2f4c85c 100644
--- a/libmacos/macos/video.h
+++ b/libmacos/macos/video.h
@@ -83,7 +83,7 @@ static inline OSErr GetCurrentMode(short refNum, VDSwitchInfoRec *hwMode)
 
 	param.csCode = cscGetCurMode;
 	param.ioCRefNum = refNum;
-	*((VDSwitchInfoRec **)&param.csParam[0]) = hwMode;
+	param.csParamPtr = hwMode;
 
 	return PBStatusSync((ParmBlkPtr)&param);
 }