diff --git a/build-jack.sh b/build-jack.sh
index 9127ac1..ba1ee26 100755
--- a/build-jack.sh
+++ b/build-jack.sh
@@ -225,9 +225,11 @@ if [ -f "${PAWPAW_PREFIX}/bin/moc" ]; then
         patch_file qjackctl "${QJACKCTL_VERSION}" "configure" 's/-ljack /-Wl,-Bdynamic -ljack64 -Wl,-Bstatic /'
     elif [ "${WIN32}" -eq 1 ]; then
         patch_file qjackctl "${QJACKCTL_VERSION}" "configure" 's/-ljack /-Wl,-Bdynamic -ljack -Wl,-Bstatic /'
+    elif [ "${MACOS}" -eq 1 ]; then
+        qjackctl_extra_args="--with-jack="${jack2_prefix}${jack2_extra_prefix}""
     fi
 
-    build_autoconf qjackctl "${QJACKCTL_VERSION}" "--enable-jack-version --with-jack="${jack2_prefix}${jack2_extra_prefix}""
+    build_autoconf qjackctl "${QJACKCTL_VERSION}" "--enable-jack-version ${qjackctl_extra_args}"
 fi
 
 # ---------------------------------------------------------------------------------------------------------------------