diff --git a/logging.c b/logging.c
index e5438e6..d432762 100644
--- a/logging.c
+++ b/logging.c
@@ -116,7 +116,7 @@ LOG_Line_Function(LOG_Severity severity, LOG_Facility facility, const char *form
 
 /* ================================================== */
 
-volatile void
+void
 LOG_Fatal_Function(LOG_Facility facility, const char *format, ...)
 {
   char buf[2048];
diff --git a/logging.h b/logging.h
index 33a792d..6e73dbb 100644
--- a/logging.h
+++ b/logging.h
@@ -77,7 +77,7 @@ extern void LOG_Finalise(void);
 extern void LOG_Line_Function(LOG_Severity severity, LOG_Facility facility, const char *format, ...);
 
 /* Logging function for fatal errors */
-extern volatile void LOG_Fatal_Function(LOG_Facility facility, const char *format, ...);
+extern void LOG_Fatal_Function(LOG_Facility facility, const char *format, ...);
 
 /* Position in code reporting function */
 extern void LOG_Position(const char *filename, int line_number, const char *function_name);
diff --git a/main.c b/main.c
index 09b87d5..18312e0 100644
--- a/main.c
+++ b/main.c
@@ -74,7 +74,7 @@ delete_pidfile(void)
 
 /* ================================================== */
 
-volatile void
+void
 MAI_CleanupAndExit(void)
 {
   if (!initialised) exit(0);
diff --git a/main.h b/main.h
index aaf071a..4bbaf1d 100644
--- a/main.h
+++ b/main.h
@@ -32,7 +32,7 @@
 #define GOT_MAIN_H
 
 /* Function to clean up at end of run */
-extern volatile void MAI_CleanupAndExit(void);
+extern void MAI_CleanupAndExit(void);
 
 #endif /* GOT_MAIN_H */