diff --git a/sysdeps/m68k/fpu/s_modff.c b/sysdeps/m68k/fpu/s_modff.c
index 37bff0022f..0c44d7c0ab 100644
--- a/sysdeps/m68k/fpu/s_modff.c
+++ b/sysdeps/m68k/fpu/s_modff.c
@@ -1,3 +1,3 @@
-#define FUNC modff
+#define SUFF f
 #define float_type float
 #include <s_modf.c>
diff --git a/sysdeps/m68k/fpu/s_modfl.c b/sysdeps/m68k/fpu/s_modfl.c
index 51327dd1aa..c7075b3ba9 100644
--- a/sysdeps/m68k/fpu/s_modfl.c
+++ b/sysdeps/m68k/fpu/s_modfl.c
@@ -1,3 +1,3 @@
-#define FUNC modfl
+#define SUFF l
 #define float_type long double
 #include <s_modf.c>