diff --git a/src/gen-public-types.sh b/src/gen-public-types.sh
index fcdc38141704e0099c6e7affbfe35974149cff51..036c336ce3195032d1589d54aa44e83c23bd3aa2 100644
--- a/src/gen-public-types.sh
+++ b/src/gen-public-types.sh
@@ -16,7 +16,7 @@ void
 hdy_init_public_types (void)
 {'
 
-sed -ne 's/^#define \+\(HDY_TYPE_[A-Z0-9_]\+\) \+.*/  g_type_ensure (\1);/p' "$@" | sort
+sed -ne 's/^#define \{1,\}\(HDY_TYPE_[A-Z0-9_]\{1,\}\) \{1,\}.*/  g_type_ensure (\1);/p' "$@" | sort
 
 echo '}
 '