diff --git a/library/Makefile b/library/Makefile
index 69ccbfd..5d645f7 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -302,7 +302,7 @@
 
 libmbedcrypto.dll: $(OBJS_CRYPTO)
 	echo "  LD    $@"
-	$(CC) -shared -Wl,-soname,$@ -Wl,--out-implib,$@.a -o $@ $(OBJS_CRYPTO) -lws2_32 -lwinmm -lgdi32 -static-libgcc $(LOCAL_LDFLAGS) $(LDFLAGS)
+	$(CC) -shared -Wl,-soname,$@ -Wl,--out-implib,$@.a -o $@ $(OBJS_CRYPTO) -lws2_32 -lbcrypt -lwinmm -lgdi32 -static-libgcc $(LOCAL_LDFLAGS) $(LDFLAGS)
 
 .c.o:
 	echo "  CC    $<"