diff --git a/demos/ARM7-AT91SAM7X-GCC/Makefile.thumb b/demos/ARM7-AT91SAM7X-GCC/Makefile.thumb
index e3fb4a6ce..9dc1a0d7f 100644
--- a/demos/ARM7-AT91SAM7X-GCC/Makefile.thumb
+++ b/demos/ARM7-AT91SAM7X-GCC/Makefile.thumb
@@ -69,7 +69,6 @@ ASRC =
 #       enabled for all modules and that lowers performance.
 TSRC = ../../ports/ARM7-AT91SAM7X/chcore.c \
        ../../ports/ARM7-AT91SAM7X/sam7x_serial.c \
-       ../../ports/ARM7-AT91SAM7X/sam7x_emac.c \
        ../../src/chinit.c ../../src/chdebug.c ../../src/chlists.c ../../src/chdelta.c \
        ../../src/chschd.c ../../src/chthreads.c ../../src/chsem.c ../../src/chmtx.c \
        ../../src/chevents.c ../../src/chmsg.c ../../src/chsleep.c ../../src/chqueues.c \