diff --git a/APP/multiCentral.c b/APP/multiCentral.c
index 3fbc312..5644088 100644
--- a/APP/multiCentral.c
+++ b/APP/multiCentral.c
@@ -34,13 +34,13 @@ uint8_t bt_conncet_cnt  = 0;
 #define DEFAULT_MAX_SCAN_RES 1
 
 // Scan duration in 0.625ms
-#define DEFAULT_SCAN_DURATION 1600 * 3 // 2400*0.625 = 1500ms
+#define DEFAULT_SCAN_DURATION (1600 * 3) // 2400*0.625 = 1500ms
 
 // Connection min interval in 1.25ms
 #define DEFAULT_MIN_CONNECTION_INTERVAL (80 * 4)
 
 // Connection max interval in 1.25ms
-#define DEFAULT_MAX_CONNECTION_INTERVAL 80 * 5
+#define DEFAULT_MAX_CONNECTION_INTERVAL 80 * 6
 
 // Connection supervision timeout in 10ms
 #define DEFAULT_CONNECTION_TIMEOUT (100 * 3)