diff --git a/win32ss/gdi/ntgdi/coord.h b/win32ss/gdi/ntgdi/coord.h
index 9c7a75bbcd9..6dcf58fc982 100644
--- a/win32ss/gdi/ntgdi/coord.h
+++ b/win32ss/gdi/ntgdi/coord.h
@@ -4,14 +4,16 @@
 #define MIN_COORD (INT_MIN / 16)
 #define MAX_COORD (INT_MAX / 16)
 
-#define IntLPtoDP(pdc, ppt, count) \
+#define IntLPtoDP(pdc, ppt, count) do { \
         DC_vUpdateWorldToDevice(pdc); \
-        DC_vXformWorldToDevice(pdc, count, (PPOINTL)(ppt), (PPOINTL)(ppt));
+        DC_vXformWorldToDevice(pdc, count, (PPOINTL)(ppt), (PPOINTL)(ppt)); \
+    } while (0)
 #define CoordLPtoDP(pdc, ppt) \
         DC_vXformWorldToDevice(pdc, 1,  (PPOINTL)(ppt), (PPOINTL)(ppt));
-#define IntDPtoLP(pdc, ppt, count) \
+#define IntDPtoLP(pdc, ppt, count) do { \
         DC_vUpdateDeviceToWorld(pdc); \
-        DC_vXformDeviceToWorld(pdc, count, (PPOINTL)(ppt), (PPOINTL)(ppt));
+        DC_vXformDeviceToWorld(pdc, count, (PPOINTL)(ppt), (PPOINTL)(ppt)); \
+    } while (0)
 #define CoordDPtoLP(pdc, ppt) \
         DC_vXformDeviceToWorld(pdc, 1, (PPOINTL)(ppt), (PPOINTL)(ppt));