diff --git a/configure.ac b/configure.ac
index 3664ecc2..4b86f923 100755
--- a/configure.ac
+++ b/configure.ac
@@ -139,7 +139,7 @@ AC_DEFINE(PACKAGE_VERSION_MAJOR, "[m4_esyscmd_s([sed -e 's#^\([0-9]*\)\..*$#\1#'
 AC_DEFINE(PACKAGE_VERSION_MINOR, "[m4_esyscmd_s([sed -e 's#^.*\.\([0-9]*\)$#\1#' VERSION])]", [The minor version of the package.])
 AC_ARG_VAR(GIT_REVISION, [Predefined value to use for revision instead of running git describe.])
 if test -n "$GIT_REVISION"; then
-	AC_DEFINE(REVISION, [m4_esyscmd_s([echo "$GIT_REVISION"])], [The revision of the package.])
+	AC_DEFINE(REVISION, "[m4_esyscmd_s([echo "$GIT_REVISION"])]", [The revision of the package.])
 else
 	AC_DEFINE(REVISION, "[m4_esyscmd_s([git describe --always 2>/dev/null || (date +p%Y%m%d)])]", [The revision of the package.])
 fi