diff --git a/base/NTMakefile b/base/NTMakefile
index 0668cd699..854b33a0b 100644
--- a/base/NTMakefile
+++ b/base/NTMakefile
@@ -35,6 +35,15 @@ RELDIR=base
 
 INCFILES=$(INCDIR)\heimbase.h
 
+{}.c{$(OBJ)}.obj::
+	$(C2OBJ_P) -DROKEN_RENAME
+
+{$(OBJ)}.c{$(OBJ)}.obj::
+	$(C2OBJ_P) -DROKEN_RENAME
+
+$(OBJ)\snprintf.obj: $(SRCDIR)\..\lib/roken/snprintf.c
+	$(C2OBJ) -DROKEN_RENAME
+
 libheimbase_OBJS =		\
 	$(OBJ)\array.obj	\
 	$(OBJ)\bool.obj		\
@@ -42,6 +51,7 @@ libheimbase_OBJS =		\
 	$(OBJ)\heimbase.obj	\
 	$(OBJ)\null.obj		\
 	$(OBJ)\number.obj	\
+	$(OBJ)\snprintf.obj	\
 	$(OBJ)\string.obj
 
 $(LIBHEIMBASE): $(libheimbase_OBJS)