diff --git a/plugins/php/versions/common/memcached.sh b/plugins/php/versions/common/memcached.sh
index 864703ab8..93f3682a3 100755
--- a/plugins/php/versions/common/memcached.sh
+++ b/plugins/php/versions/common/memcached.sh
@@ -61,7 +61,8 @@ Install_lib()
 			OPTIONS="$OPTIONS --build=aarch64-unknown-linux-gnu --host=aarch64-unknown-linux-gnu"
 		fi
 
-		if ! pkg-config --exists libmemcached; then
+		pkg-config --exists libmemcached
+		if [ "$?" != "0" ]; then
 			cd ${rootPath}/plugins/php/lib && /bin/bash libmemcached.sh
 			OPTIONS="$OPTIONS --with-libmemcached-dir=${serverPath}/lib/libmemcached"
 		fi