diff --git a/scripts/makepkg.sh.in b/scripts/makepkg.sh.in
index dbc40471..f2ec78e2 100644
--- a/scripts/makepkg.sh.in
+++ b/scripts/makepkg.sh.in
@@ -1255,7 +1255,7 @@ check_sanity() {
 
 	if (( ${#pkgname[@]} > 1 )); then
 		for pkg in ${pkgname[@]}; do
-			if declare -f package_${pkg} >/dev/null; then
+			if ! declare -f package_${pkg} >/dev/null; then
 				error "$(gettext "missing package function for split package '%s'")" "$pkg"
 				return 1
 			fi