diff --git a/config.h b/config.h
index a310618..2b22b77 100644
--- a/config.h
+++ b/config.h
@@ -64,9 +64,9 @@
 
 #define BAUD_RATE 9600
 
-#define STEP_MASK (1<<X_STEP_BIT)|(1<<Y_STEP_BIT)|(1<<Z_STEP_BIT)
-#define DIRECTION_MASK (1<<X_DIRECTION_BIT)|(1<<Y_DIRECTION_BIT)|(1<<Z_DIRECTION_BIT)
-#define STEPPING_MASK STEP_MASK | DIRECTION_MASK
-#define LIMIT_MASK (1<<X_LIMIT_BIT)|(1<<Y_LIMIT_BIT)|(1<<Z_LIMIT_BIT)
+#define STEP_MASK ((1<<X_STEP_BIT)|(1<<Y_STEP_BIT)|(1<<Z_STEP_BIT))
+#define DIRECTION_MASK ((1<<X_DIRECTION_BIT)|(1<<Y_DIRECTION_BIT)|(1<<Z_DIRECTION_BIT))
+#define STEPPING_MASK (STEP_MASK | DIRECTION_MASK)
+#define LIMIT_MASK ((1<<X_LIMIT_BIT)|(1<<Y_LIMIT_BIT)|(1<<Z_LIMIT_BIT))
 
 #endif
diff --git a/stepper.c b/stepper.c
index 1bc6e25..0c0e28e 100644
--- a/stepper.c
+++ b/stepper.c
@@ -85,6 +85,7 @@ void st_init()
 {
 	// Configure directions of interface pins
   STEPPING_DDR   |= STEPPING_MASK;
+  printInteger(STEPPING_DDR);
   LIMIT_DDR &= ~(LIMIT_MASK);
   STEPPERS_ENABLE_DDR |= 1<<STEPPERS_ENABLE_BIT;