diff --git a/dlls/mp3dmod/Makefile.in b/dlls/mp3dmod/Makefile.in
index dabbb1dfeae..3ba343a4d34 100644
--- a/dlls/mp3dmod/Makefile.in
+++ b/dlls/mp3dmod/Makefile.in
@@ -1,6 +1,7 @@
 MODULE    = mp3dmod.dll
 IMPORTS   = $(MPG123_PE_LIBS) dmoguids msdmo ole32 uuid wmcodecdspuuid kernelbase
 EXTRAINCL = $(MPG123_PE_CFLAGS)
+EXTRADEFS = -DMPG123_NO_LARGENAME
 
 C_SRCS = \
 	mp3dmod.c