diff --git a/Python/compile.c b/Python/compile.c
index e14fc01..77ae001 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -767,7 +767,6 @@
 static PyObject *
 parsenumber(struct compiling *co, char *s)
 {
-	extern double atof(const char *);
 	char *end;
 	long x;
 	double dx;
diff --git a/Python/marshal.c b/Python/marshal.c
index f8953ce..a9b3ed1 100644
--- a/Python/marshal.c
+++ b/Python/marshal.c
@@ -403,7 +403,6 @@
 	
 	case TYPE_FLOAT:
 		{
-			extern double atof(const char *);
 			char buf[256];
 			double dx;
 			n = r_byte(p);
@@ -422,7 +421,6 @@
 #ifndef WITHOUT_COMPLEX
 	case TYPE_COMPLEX:
 		{
-			extern double atof(const char *);
 			char buf[256];
 			Py_complex c;
 			n = r_byte(p);