diff --git a/armsrc/Makefile b/armsrc/Makefile
index a5d0b1403..15bf55d33 100644
--- a/armsrc/Makefile
+++ b/armsrc/Makefile
@@ -28,7 +28,6 @@ endif
 #in the next section to remove that particular feature from compilation.
 # NO space,TABs after the "\" sign.
 APP_CFLAGS = $(PLATFORM_DEFS) \
-			 -DWITH_CRC \
 			 -DON_DEVICE \
 			 -DWITH_LF \
 			 -DWITH_HITAG \
diff --git a/armsrc/Standalone/readme.md b/armsrc/Standalone/readme.md
index 12fe6c145..21eadc45f 100644
--- a/armsrc/Standalone/readme.md
+++ b/armsrc/Standalone/readme.md
@@ -68,8 +68,7 @@ Once all this is done, you and others can now easily compile different standalon
 #remove one of the following defines and comment out the relevant line
 #in the next section to remove that particular feature from compilation.
 # NO space,TABs after the "\" sign.
-APP_CFLAGS = -DWITH_CRC \
-             -DON_DEVICE \
+APP_CFLAGS = -DON_DEVICE \
              -DWITH_LF \
              -DWITH_HITAG \
              -DWITH_ISO15693 \