diff --git a/Configure b/Configure
index c98107a..77ad9d3 100644
--- a/Configure
+++ b/Configure
@@ -970,7 +970,7 @@ PROCESS_ARGS:
 				}
 			elsif (/^--with-zlib-include=(.*)$/)
 				{
-				$withargs{"zlib-include"}="-I$1";
+				$withargs{"zlib-include"}="-I\"$1\"";
 				}
 			elsif (/^--with-fipsdir=(.*)$/)
 				{