diff --git a/pycardium/mpconfigport.h b/pycardium/mpconfigport.h
index 309b8f7f76ba776b791288f5f9aa69d9825e4fdd..d6affbd41aade2015de61c2b3f07d3d0d93d7520 100644
--- a/pycardium/mpconfigport.h
+++ b/pycardium/mpconfigport.h
@@ -21,6 +21,8 @@
 
 #define MICROPY_ENABLE_SCHEDULER            (1)
 
+#define MICROPY_ENABLE_SOURCE_LINE          (1)
+
 /* Builtin function and modules */
 #define MICROPY_PY_ALL_SPECIAL_METHODS      (1)
 #define MICROPY_PY_BUILTINS_HELP            (1)