diff --git a/aircraft_cmd.c b/aircraft_cmd.c
index 3424f9e5d1..f16d4a75b7 100644
--- a/aircraft_cmd.c
+++ b/aircraft_cmd.c
@@ -65,6 +65,7 @@ static uint16 FindNearestHangar(const Vehicle *v)
 	return index;
 }
 
+#if 0
 // returns true if vehicle v have an airport in the schedule, that has a hangar
 static bool HaveHangarInOrderList(Vehicle *v)
 {
@@ -82,6 +83,7 @@ static bool HaveHangarInOrderList(Vehicle *v)
 
 	return false;
 }
+#endif
 
 int GetAircraftImage(Vehicle *v, byte direction)
 {
diff --git a/dedicated.c b/dedicated.c
index 0c2de4a0bc..079900199a 100644
--- a/dedicated.c
+++ b/dedicated.c
@@ -327,9 +327,9 @@ const HalVideoDriver _dedicated_video_driver = {
 
 static void *_dedicated_video_mem;
 
-static const char *DedicatedVideoStart(const char **parm)
+static const char *DedicatedVideoStart(const char * const *parm)
 {
-	DEBUG(misc,0)("OpenTTD compiled without network-support, quiting...");
+	DEBUG(misc, 0) ("OpenTTD compiled without network-support, exiting...");
 
 	return NULL;
 }
diff --git a/saveload.c b/saveload.c
index e9e504a5c2..659a42a068 100644
--- a/saveload.c
+++ b/saveload.c
@@ -241,6 +241,7 @@ static void SlCopyBytes(void *ptr, size_t length)
 	}
 }
 
+#if 0
 static void SlSkipBytes(size_t length)
 {
 	while (length) {
@@ -248,6 +249,7 @@ static void SlSkipBytes(size_t length)
 		length--;
 	}
 }
+#endif
 
 uint SlGetFieldLength(void)
 {