diff --git a/polymer/eduke32/build/src/winlayer.c b/polymer/eduke32/build/src/winlayer.c
index cf7c4ac80..0ebe4752c 100644
--- a/polymer/eduke32/build/src/winlayer.c
+++ b/polymer/eduke32/build/src/winlayer.c
@@ -686,7 +686,7 @@ void initprintf(const char *f, ...)
     Bvsnprintf(buf, sizeof(buf), f, va);
     va_end(va);
 
-    OSD_Printf(buf);
+    OSD_Printf("%s",buf);
 
     mutex_lock(&m_initprintf);
     if ((Bstrlen(dabuf) + Bstrlen(buf) + 2) > sizeof(dabuf))
diff --git a/polymer/eduke32/source/game.c b/polymer/eduke32/source/game.c
index 2bfb77c5f..f489de6cc 100644
--- a/polymer/eduke32/source/game.c
+++ b/polymer/eduke32/source/game.c
@@ -7992,7 +7992,7 @@ static void G_ShowParameterHelp(void)
               ;
 #if defined RENDERTYPEWIN
     Bsnprintf(tempbuf, sizeof(tempbuf), HEAD2 " %s", s_buildRev);
-    wm_msgbox(tempbuf,s);
+    wm_msgbox(tempbuf,"%s",s);
 #else
     initprintf("%s\n",s);
 #endif
@@ -8019,7 +8019,7 @@ static void G_ShowDebugHelp(void)
               ;
 #if defined RENDERTYPEWIN
     Bsnprintf(tempbuf, sizeof(tempbuf), HEAD2 " %s", s_buildRev);
-    wm_msgbox(tempbuf,s);
+    wm_msgbox(tempbuf,"%s",s);
 #else
     initprintf("%s\n",s);
 #endif
@@ -9579,7 +9579,7 @@ static void G_Startup(void)
             Bsprintf(tempbuf, "You have run Duke Nukem 3D shareware %d times.  It is now time to upgrade to the complete version!\n\n"
                      "Purchase Duke Nukem 3D for $5.99 now?\n", ud.executions);
 
-            if (wm_ynbox("Upgrade to the full version of Duke Nukem 3D",tempbuf))
+            if (wm_ynbox("Upgrade to the full version of Duke Nukem 3D","%s",tempbuf))
             {
                 SHELLEXECUTEINFOA sinfo;
                 char *p = "http://www.gog.com/en/gamecard/duke_nukem_3d_atomic_edition/?pp=6c1e671f9af5b46d9c1a52067bdf0e53685674f7";
diff --git a/polymer/eduke32/source/gamedef.c b/polymer/eduke32/source/gamedef.c
index 31f6a8dd2..31ec36130 100644
--- a/polymer/eduke32/source/gamedef.c
+++ b/polymer/eduke32/source/gamedef.c
@@ -5744,7 +5744,7 @@ void C_Compile(const char *filenam)
                      "(Clicking yes will bring you to our web store)",
                      g_grpNamePtr,g_grpNamePtr);
 
-            if (wm_ynbox("Important - Duke Nukem 3D not found - EDuke32",tempbuf))
+            if (wm_ynbox("Important - Duke Nukem 3D not found - EDuke32","%s",tempbuf))
             {
                 SHELLEXECUTEINFOA sinfo;
                 char *p = "http://www.gog.com/en/gamecard/duke_nukem_3d_atomic_edition/?pp=6c1e671f9af5b46d9c1a52067bdf0e53685674f7";
diff --git a/polymer/eduke32/source/menus.c b/polymer/eduke32/source/menus.c
index f6a52ceb3..caf18aff1 100644
--- a/polymer/eduke32/source/menus.c
+++ b/polymer/eduke32/source/menus.c
@@ -3476,7 +3476,10 @@ cheat_for_port_credits:
         mgametext(c+168,50-8,tempbuf,MENUHIGHLIGHT(0),2+8+16);
 
         menutext(c,50+16,MENUHIGHLIGHT(1),0,"RENDERER");
-        Bsprintf(tempbuf,(vidsets[newvidset]&0x20000)?"%d-bit OpenGL":"Software", vidsets[newvidset]&0x0ffff);
+        if (vidsets[newvidset]&0x20000)
+            Bsprintf(tempbuf,"%d-bit OpenGL", vidsets[newvidset]&0x0ffff);
+        else
+            Bsprintf(tempbuf,"Software");
         mgametext(c+168,50+16-8,tempbuf,MENUHIGHLIGHT(1),2+8+16);
 
         menutext(c,50+16+16,MENUHIGHLIGHT(2),0,"FULLSCREEN");