1 files changed, 1 insertions, 1 deletions

diff --git a/miscutils/make.c b/miscutils/make.c
index 42fac7f77..7b54bfe95 100644
--- a/miscutils/make.c
+++ b/miscutils/make.c
@@ -520,7 +520,7 @@ is_valid_macro(const char *name)
         for (s = name; *s; ++s) {
                 // In POSIX mode only a limited set of characters are guaranteed
                 // to be allowed in macro names.
-                if (posix && !isfname(*s))
+                if (posix && !ispname(*s))
                         return FALSE;
                 // As an extension allow anything that can get through the
                 // input parser, apart from the following.