diff --git a/winbuild/MakefileBuild.vc b/winbuild/MakefileBuild.vc
index 32790ff86d..b6d29ce21c 100644
--- a/winbuild/MakefileBuild.vc
+++ b/winbuild/MakefileBuild.vc
@@ -68,7 +68,7 @@ LNKDLL     = link.exe /DLL
 LNKLIB     = link.exe /lib
 
 CFLAGS_PDB = /Zi
-LFLAGS_PDB = /incremental:no /opt:ref,icf
+LFLAGS_PDB = /incremental:no /opt:ref,icf /DEBUG
 
 CFLAGS_LIBCURL_STATIC  = /DCURL_STATICLIB