diff --git a/Python/formatter_string.c b/Python/formatter_string.c
index f33ad70..e6a4d4b 100644
--- a/Python/formatter_string.c
+++ b/Python/formatter_string.c
@@ -6,9 +6,10 @@
 #include "Python.h"
 #include "../Objects/stringlib/stringdefs.h"
 
-#define FORMAT_STRING _PyBytes_FormatAdvanced
-#define FORMAT_LONG   _PyLong_FormatAdvanced
-#define FORMAT_INT    _PyInt_FormatAdvanced
-#define FORMAT_FLOAT  _PyFloat_FormatAdvanced
+#define FORMAT_STRING  _PyBytes_FormatAdvanced
+#define FORMAT_LONG    _PyLong_FormatAdvanced
+#define FORMAT_INT     _PyInt_FormatAdvanced
+#define FORMAT_FLOAT   _PyFloat_FormatAdvanced
+#define FORMAT_COMPLEX _PyComplex_FormatAdvanced
 
 #include "../Objects/stringlib/formatter.h"
diff --git a/Python/formatter_unicode.c b/Python/formatter_unicode.c
index 5cf5bad..6e3685d 100644
--- a/Python/formatter_unicode.c
+++ b/Python/formatter_unicode.c
@@ -9,9 +9,9 @@
 
 #define FORMAT_STRING _PyUnicode_FormatAdvanced
 
-/* don't define FORMAT_LONG and FORMAT_FLOAT, since we can live
-   with only the string versions of those.  The builtin format()
-   will convert them to unicode. */
+/* don't define FORMAT_LONG, FORMAT_FLOAT, and FORMAT_COMPLEX, since
+   we can live with only the string versions of those.  The builtin
+   format() will convert them to unicode. */
 
 #include "../Objects/stringlib/formatter.h"