diff --git a/src/ps2comm.c b/src/ps2comm.c
index 887e2e0..0aa33f8 100644
--- a/src/ps2comm.c
+++ b/src/ps2comm.c
@@ -78,7 +78,7 @@
 #ifdef DEBUG
 #define PS2DBG(...) ErrorF(__VA_ARGS__)
 #else
-#define PS2DBG(...)
+#define PS2DBG(...) do { } while (0)
 #endif
 
 /*****************************************************************************