diff --git a/mach/vc4/as/mach3.c b/mach/vc4/as/mach3.c
index 72c0c2a88..0ae247226 100644
--- a/mach/vc4/as/mach3.c
+++ b/mach/vc4/as/mach3.c
@@ -54,7 +54,7 @@
 0,     CC,         2,          ".cs",
 0,     CC,         2,          ".lo",
 0,     CC,         3,          ".cc",
-0,     CC,         3,          ".hg",
+0,     CC,         3,          ".hs",
 0,     CC,         4,          ".mi",
 0,     CC,         5,          ".pl",
 0,     CC,         6,          ".vs",