diff --git a/scripts/libmakepkg/srcinfo.sh.in b/scripts/libmakepkg/srcinfo.sh.in
index 2705ad7d..c43d4cee 100644
--- a/scripts/libmakepkg/srcinfo.sh.in
+++ b/scripts/libmakepkg/srcinfo.sh.in
@@ -40,11 +40,17 @@ srcinfo_write_attr() {
 
 	local attrname=$1 attrvalues=("${@:2}")
 
+	# this function requires extglob - save current status to restore later
+	local shellopts=$(shopt -p extglob)
+	shopt -s extglob
+
 	# normalize whitespace, strip leading and trailing
 	attrvalues=("${attrvalues[@]//+([[:space:]])/ }")
 	attrvalues=("${attrvalues[@]#[[:space:]]}")
 	attrvalues=("${attrvalues[@]%[[:space:]]}")
 
+	eval "$shellopts"
+
 	printf "\t$attrname = %s\n" "${attrvalues[@]}"
 }