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-rw-r--r--Projects/USBtoSerial/makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/Projects/USBtoSerial/makefile b/Projects/USBtoSerial/makefile
index bb6448485..58b68995a 100644
--- a/Projects/USBtoSerial/makefile
+++ b/Projects/USBtoSerial/makefile
@@ -180,7 +180,7 @@ EXTRAINCDIRS = $(LUFA_PATH)/
# gnu89 = c89 plus GCC extensions
# c99 = ISO C99 standard (not yet fully implemented)
# gnu99 = c99 plus GCC extensions
-CSTANDARD = -std=gnu99
+CSTANDARD = -std=c99
# Place -D or -U options here for C sources