diff --git a/config/nim.cfg b/config/nim.cfg
index b5bcc4053..7c8c78969 100644
--- a/config/nim.cfg
+++ b/config/nim.cfg
@@ -157,8 +157,11 @@ clang.objc.options.linker = "-lobjc -lgnustep-base"
 
 gcc.options.speed = "-O3 -fno-strict-aliasing"
 gcc.options.size = "-Os"
-gcc.options.debug = "-g3 -O0"
-
+@if windows:
+  gcc.options.debug = "-g3 -O0 -gdwarf-3"
+@else:
+  gcc.options.debug = "-g3 -O0"
+@end
 gcc.cpp.options.speed = "-O3 -fno-strict-aliasing"
 gcc.cpp.options.size = "-Os"
 gcc.cpp.options.debug = "-g3 -O0"