diff --git a/tools/rbspeex/Makefile b/tools/rbspeex/Makefile
index 03f88f34cd..669e030c0d 100644
--- a/tools/rbspeex/Makefile
+++ b/tools/rbspeex/Makefile
@@ -73,12 +73,14 @@ endif
 ifeq ($(SYS_SPEEX),)
 # This sets up 'SRC' based on the files mentioned in SOURCES
 SPEEXSRCS := $(shell $(CC) $(CFLAGS) -E -P -xc $(SPEEXSRC)/SOURCES)
-LIBSOURCES := $(SPEEXSRCS:%.c=$(SPEEXSRC)/%.c) rbspeex.c
+LIBSOURCES := $(SPEEXSRCS:%.c=$(SPEEXSRC)/%.c)
 LIBS = $(TARGET_DIR)librbspeex.a
 else
 LIBS = $(SYS_SPEEX)
 endif
 
+LIBSOURCES += rbspeex.c
+
 TARGET_DIR ?= $(shell pwd)/
 BUILD_DIR ?= $(TARGET_DIR)build$(COMPILETARGET)
 OBJDIR = $(abspath $(BUILD_DIR))/