diff --git a/include/OSD.h b/include/OSD.h
deleted file mode 100644
index e87600e..0000000
--- a/include/OSD.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef _OSD_H_
-#define _OSD_H_
-extern void osd_spectrum();
-extern void osdPrintSignalLevelChart(int col, int signal_value);
-extern unsigned short selectFreqChar(int bin, int start_level = 0);
-#endif
diff --git a/include/ui.h b/include/ui.h
index 1cbdba2..0eb1a1c 100644
--- a/include/ui.h
+++ b/include/ui.h
@@ -13,8 +13,8 @@
 #define MINOR_TICKS 5
 
 #define ONE_MILLISEC 1
-#define ONE_SEC 1000
-#define ONE_MINUTE 60 * 1000
+#define ONE_SEC_MIL 1000
+#define ONE_MINUTE_MIL 60 * 1000
 
 #define MAJOR_TICK_LENGTH 2
 #define MINOR_TICK_LENGTH 1
diff --git a/src/main.cpp b/src/main.cpp
index 1c6f264..bf4d347 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -395,7 +395,7 @@ void osdPrintSignalLevelChart(int col, int signal_value)
     }
 }
 
-void osd_spectrum()
+void osdProcess()
 { // OSD enabled
 
     // memset(max_bins_array, 33, 30);