diff --git a/src/DrawArea.h b/src/DrawArea.h
index 409a35ae9c2623d595bf198610ab256c5dcec510..74570d9d5fb132715119bc65c67366689dfaf7f1 100644
--- a/src/DrawArea.h
+++ b/src/DrawArea.h
@@ -28,9 +28,9 @@
 #include <stdint.h>
 
 #define INVALID_ALTITUDE 55537
-#define MIN_TIME               0.72	// s/m
-#define POSITIVE_SLOPE_FACTOR  5	// s/m/100%
-#define NEGATIVE_SLOPE_FACTOR -2 	// s/m/-100%
+#define MIN_TIME               1.8  	// s/m //0.72 old value
+#define POSITIVE_SLOPE_FACTOR  15	// s/m/100%
+#define NEGATIVE_SLOPE_FACTOR -5 	// s/m/-100%
 #define SQRT_2 1.41421356237
 
 // Node is the basic structure of the graph