diff --git a/Makefile b/Makefile
index 1768da54..3478231d 100644
--- a/Makefile
+++ b/Makefile
@@ -19,6 +19,7 @@ SRCDIR_BASIC   = $(SRCDIR_COMMON) \
                  c64/basic/init \
                  c64/basic/math \
                  c64/basic/math_consts \
+                 c64/basic/math_mov \
                  c64/basic/print \
                  c64/basic/rom_revision