diff --git a/graph.c b/graph.c
index 440f2507..a9d4a378 100644
--- a/graph.c
+++ b/graph.c
@@ -35,19 +35,19 @@ void graphDrawSystem(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_
 	}
 }
 
-void graphDrawDots(int16_t coord[][2], uint16_t entries, uint16_t radius, uint16_t color) {
+void graphDrawDots(int coord[][2], uint16_t entries, uint16_t radius, uint16_t color) {
 	uint16_t i;
 
-	for(i=0; i<entries; i++)
+	for(i = 0; i < entries; i++)
 		lcdDrawCircle(coord[i][0]+x, y-coord[i][1], radius, 1, color);
 }
 
-void graphDrawNet(int16_t coord[][2], uint16_t entries, uint16_t radius, uint16_t lineColor, uint16_t dotColor) {
+void graphDrawNet(int coord[][2], uint16_t entries, uint16_t radius, uint16_t lineColor, uint16_t dotColor) {
 	uint16_t i;
 
 	for(i = 0; i < entries; ++i)
 		lcdDrawLine(coord[i-1][0]+x, y-coord[i-1][1], coord[i][0]+x, y-coord[i][1], lineColor); 
-	for(i=0; i<entries; ++i)
+	for(i = 0; i < entries; ++i)
 		if(radius != 0)
 			lcdDrawCircle(coord[i][0]+x, y-coord[i][1], radius, 1, dotColor);
 }
diff --git a/graph.h b/graph.h
index eb03c3d5..25c7191b 100644
--- a/graph.h
+++ b/graph.h
@@ -28,7 +28,7 @@ void graphDrawSystem(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_
  *
  * return: none
  */
-void graphDrawDots(int16_t coord[][2], uint16_t entries, uint16_t radius, uint16_t color);
+void graphDrawDots(int coord[][2], uint16_t entries, uint16_t radius, uint16_t color);
 
 /*
  * Description: does draw coordinates into graph connected by lines
@@ -42,7 +42,7 @@ void graphDrawDots(int16_t coord[][2], uint16_t entries, uint16_t radius, uint16
  *
  * return: none
  */	
-void graphDrawNet(int16_t coord[][2], uint16_t entries, uint16_t radius, uint16_t lineColor, uint16_t dotColor);
+void graphDrawNet(int coord[][2], uint16_t entries, uint16_t radius, uint16_t lineColor, uint16_t dotColor);
 
 #ifdef __cplusplus
 }