diff --git a/include/ck_md.h.in b/include/ck_md.h.in
index cb5783e..14d7cf2 100644
--- a/include/ck_md.h.in
+++ b/include/ck_md.h.in
@@ -47,7 +47,7 @@
 #define @POINTER_PACK_ENABLE@
 #endif /* @POINTER_PACK_ENABLE@ */
 
-#ifndef @VMA_BITS@ 
+#ifndef @VMA_BITS@
 #define @VMA_BITS@ @VMA_BITS_VALUE@
 #endif /* @VMA_BITS@ */