diff --git a/darkwater/DW640.cpp b/darkwater/DW640.cpp
index daa7d12..f6bab93 100644
--- a/darkwater/DW640.cpp
+++ b/darkwater/DW640.cpp
@@ -450,12 +450,12 @@ void DW_Stepper::step(uint16_t steps, uint8_t dir,  uint8_t style) {
   	}
 
   	while (steps--) {
-    	ret = onestep(dir, style);
+    	ret = oneStep(dir, style);
     	usleep(uspers);
   	}
 }
 
-uint8_t DW_Stepper::onestep(uint8_t dir, uint8_t style) {
+uint8_t DW_Stepper::oneStep(uint8_t dir, uint8_t style) {
   	uint8_t a, b, c, d;
   	uint8_t ocrb, ocra;
 
diff --git a/darkwater/DW640.h b/darkwater/DW640.h
index 833e4bb..a0d82c6 100644
--- a/darkwater/DW640.h
+++ b/darkwater/DW640.h
@@ -104,7 +104,7 @@ class DW_Stepper {
 
         void off(void);
         void setMotorSpeed(uint16_t speed);
-        uint8_t onestep(uint8_t dir, uint8_t style);
+        uint8_t oneStep(uint8_t dir, uint8_t style);
         void step(uint16_t steps, uint8_t dir,  uint8_t style = DW_SINGLE);
         uint32_t usperstep;