diff --git a/mendel/gcode.c b/mendel/gcode.c
index 03491e8..c6fc621 100644
--- a/mendel/gcode.c
+++ b/mendel/gcode.c
@@ -331,7 +331,12 @@ void scan_char(uint8_t c) {
 		}
 
 		// reset variables
-		next_target.seen_X = next_target.seen_Y = next_target.seen_Z = next_target.seen_E = next_target.seen_F = next_target.seen_S = next_target.seen_P = next_target.seen_N = next_target.seen_checksum = next_target.seen_comment = next_target.checksum_read = next_target.checksum_calculated = 0;
+		next_target.seen_X = next_target.seen_Y = next_target.seen_Z = \
+			next_target.seen_E = next_target.seen_F = next_target.seen_G = \
+			next_target.seen_S = next_target.seen_P = next_target.seen_N = \
+			next_target.seen_M = next_target.seen_checksum = \
+			next_target.seen_comment = next_target.checksum_read = \
+			next_target.checksum_calculated = 0;
 		last_field = 0;
 		read_digit.sign = 0;
 		read_digit.mantissa = 0;