diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 95703012b2..9c20a6ee55 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -347,6 +347,7 @@ OBJS-$(CONFIG_WMAVOICE_DECODER)        += wmavoice.o \
                                           celp_math.o celp_filters.o \
                                           acelp_vectors.o acelp_filters.o \
                                           lsp.o
+OBJS-$(CONFIG_WMV1_DECODER)            += msmpeg4.o msmpeg4data.o
 OBJS-$(CONFIG_WMV2_DECODER)            += wmv2dec.o wmv2.o        \
                                           msmpeg4.o msmpeg4data.o \
                                           intrax8.o intrax8dsp.o