diff --git a/src/blenderbim/Makefile b/src/blenderbim/Makefile
index 3b9f006ed4..8493079508 100644
--- a/src/blenderbim/Makefile
+++ b/src/blenderbim/Makefile
@@ -47,7 +47,7 @@ PYNUMBER:=39
 endif
 ifeq ($(PYVERSION), py310)
 PYLIBDIR:=python3.10
-PYNUMBER:=31
+PYNUMBER:=310
 endif
 
 ifeq ($(PLATFORM), linux)