diff --git a/configure.in b/configure.in
index 6655d7ca6a..3c14638cdd 100644
--- a/configure.in
+++ b/configure.in
@@ -345,7 +345,7 @@ else
 fi
 
 ## Enable bigendian stuff for sha1 hash code
-if "$target_cpu" = "powerpc"
+if "$target_cpu" = "powerpc"; then
       CPU_CFLAGS="-DWORDS_BIGENDIAN $CPU_CFLAGS"
 fi