diff --git a/afsk/main.c b/afsk/main.c
index 2ceed84d..04610dd9 100644
--- a/afsk/main.c
+++ b/afsk/main.c
@@ -127,7 +127,7 @@ int main(void) {
     int arduinoI2C;
     if ((arduinoI2C = open("/dev/i2c-0", O_RDWR)) < 0)
     {
-	    printf"ERROR: /dev/i2c-0 bus not present\n");    
+	    printf("ERROR: /dev/i2c-0 bus not present\n");    
     } else {    
 	arduinoI2C = wiringPiI2CSetupInterface("/dev/i2c-0", 0x4c);
     	printf("Arduio write: %d \n", wiringPiI2CWrite(arduinoI2C,42));