diff --git a/newlib/libm/common/s_fdim.c b/newlib/libm/common/s_fdim.c
index 73a027953..61a4908f3 100644
--- a/newlib/libm/common/s_fdim.c
+++ b/newlib/libm/common/s_fdim.c
@@ -49,11 +49,8 @@ ANSI C, POSIX.
 	double y;
 #endif
 {
-  int c = __fpclassifyd(x);
-  if (c == FP_NAN)  return(x);
+  if (__fpclassifyd(x) == FP_NAN)  return(x);
   if (__fpclassifyd(y) == FP_NAN)  return(y);
-  if (c == FP_INFINITE)
-    return HUGE_VAL;
 
   return x > y ? x - y : 0.0;
 }
diff --git a/newlib/libm/common/sf_fdim.c b/newlib/libm/common/sf_fdim.c
index fe349098b..8fee57002 100644
--- a/newlib/libm/common/sf_fdim.c
+++ b/newlib/libm/common/sf_fdim.c
@@ -14,11 +14,8 @@
 	float y;
 #endif
 {
-  int c = __fpclassifyf(x);
-  if (c == FP_NAN)  return(x);
+  if (__fpclassifyf(x) == FP_NAN)  return(x);
   if (__fpclassifyf(y) == FP_NAN)  return(y);
-  if (c == FP_INFINITE)
-    return HUGE_VALF;
 
   return x > y ? x - y : 0.0;
 }