diff --git a/source/src/log.cpp b/source/src/log.cpp
index e5c098d8..587151b8 100644
--- a/source/src/log.cpp
+++ b/source/src/log.cpp
@@ -80,7 +80,7 @@ struct posixsyslog : log
         s_sprintfdv(sf, msg);
         filtertext(sf, sf, 2);
         int l = (level==log::info ? LOG_INFO : ( level==log::warning ? LOG_WARNING : LOG_ERR));
-        syslog(l, sf);
+        syslog(l, "%s", sf);
         if(console)
         {
             puts(sf);
diff --git a/source/src/main.cpp b/source/src/main.cpp
index 6293a0a5..faa1ee7d 100644
--- a/source/src/main.cpp
+++ b/source/src/main.cpp
@@ -17,7 +17,7 @@ void cleanup(char *msg)         // single program exit point;
         #ifdef WIN32
         MessageBox(NULL, msg, "AssaultCube fatal error", MB_OK|MB_SYSTEMMODAL|MB_ICONERROR);
         #else
-        printf(msg);
+        printf("%s", msg);
         #endif
     }
     SDL_Quit();