diff --git a/armsrc/Makefile b/armsrc/Makefile
index 0addec868..722eb83ce 100644
--- a/armsrc/Makefile
+++ b/armsrc/Makefile
@@ -44,7 +44,7 @@ APP_CFLAGS = -DWITH_CRC \
 SRC_LCD = fonts.c LCD.c
 SRC_LF = lfops.c hitag2.c hitagS.c lfsampling.c pcf7931.c lfdemod.c
 SRC_ISO15693 = iso15693.c iso15693tools.c
-SRC_ISO14443a = iso14443a.c mifareutil.c mifarecmd.c mifaresniff.c epa.c mifaresim.c
+SRC_ISO14443a = iso14443a.c mifareutil.c mifarecmd.c mifaresniff.c epa.c
 SRC_ISO14443b = iso14443b.c
 SRC_FELICA = felica.c
 SRC_CRAPTO1 = crypto1.c des.c aes.c desfire_key.c desfire_crypto.c mifaredesfire.c