diff --git a/utils/tex2rtf/src/htmlutil.cpp b/utils/tex2rtf/src/htmlutil.cpp
index 1029c30603..16a26b4135 100644
--- a/utils/tex2rtf/src/htmlutil.cpp
+++ b/utils/tex2rtf/src/htmlutil.cpp
@@ -2523,7 +2523,7 @@ bool HTMLOnArgument(int macroId, int arg_no, bool start)
       if (val)
       {
         bool isPicture = FALSE;
-        char *s = ParseColourString(val, &isPicture);
+        ParseColourString(val, &isPicture);
         if (isPicture)
         {
           if (backgroundImageString)
@@ -2662,7 +2662,6 @@ bool HTMLOnArgument(int macroId, int arg_no, bool start)
         startRows = TRUE;
         tableVerticalLineLeft = FALSE;
         tableVerticalLineRight = FALSE;
-        int currentWidth = 0;
 
         char *alignString = copystring(GetArgData());
         ParseTableArgument(alignString);
diff --git a/utils/tex2rtf/src/rtfutils.cpp b/utils/tex2rtf/src/rtfutils.cpp
index e4e08c30bb..1fab27399e 100644
--- a/utils/tex2rtf/src/rtfutils.cpp
+++ b/utils/tex2rtf/src/rtfutils.cpp
@@ -243,7 +243,6 @@ void WriteWinHelpContentsFileLine(char *topicName, char *xitle, int level)
 		  char ch1=xitle[s+1]&0xff;
 		  char ch2=xitle[s+2]&0xff;
 		  char ch3=xitle[s+3]&0xff;
-		  char ch4=xitle[s+4]&0xff;
 		  s+=4; // next character		  
 		  char a=0;
 		  if ((ch1==0x27)&&(ch2==0x66)&&(ch3==0x36)) { title[d++]='ö';  a=1; }
@@ -3366,7 +3365,6 @@ bool RTFOnArgument(int macroId, int arg_no, bool start)
                 {
                   if (useWord)
                   {
-                      char *s = GetArgData();
                       TexOutput("p. ");
                       TexOutput("{\\field{\\*\\fldinst  PAGEREF ");
                       TexOutput(refName);
@@ -3618,7 +3616,7 @@ bool RTFOnArgument(int macroId, int arg_no, bool start)
               }
               else
               {
-                sprintf(buf, "Could not read metafile %s. Perhaps it's not a placeable metafile?", f);
+                sprintf(buf, "Could not read metafile %s. Perhaps it's not a placeable metafile?", (const char*)f);
                 OnError(buf);
               }
               fclose(fd);
diff --git a/utils/tex2rtf/src/tex2rtf.cpp b/utils/tex2rtf/src/tex2rtf.cpp
index 281acafa0c..c7fa8f6a7b 100644
--- a/utils/tex2rtf/src/tex2rtf.cpp
+++ b/utils/tex2rtf/src/tex2rtf.cpp
@@ -58,7 +58,7 @@ char *contentsString = NULL;
 bool suppressNameDecoration = FALSE;
 bool OkToClose = TRUE;
 int passNumber = 1;
-int errorCount = 0;
+unsigned long errorCount = 0UL;
 
 #ifndef NO_GUI
 
@@ -432,7 +432,7 @@ bool MyApp::OnInit()
 #ifdef NO_GUI
     return 0;
 #else
-    return NULL;
+    return FALSE;
 #endif
   }
 
@@ -440,7 +440,7 @@ bool MyApp::OnInit()
   // Return the main frame window
   return TRUE;
 #else
-  return FALSE;
+  return 0;
 #endif
 }
 
@@ -1208,7 +1208,6 @@ bool SplitCommand(char *data, char *firstArg, char *secondArg)
   firstArg[0] = 0;
   secondArg[0] = 0;
   int i = 0;
-  int len = strlen(data);
   bool stop = FALSE;
   // Find first argument (command name)
   while (!stop)
diff --git a/utils/tex2rtf/src/texutils.cpp b/utils/tex2rtf/src/texutils.cpp
index be0c83a28c..746255c5f7 100644
--- a/utils/tex2rtf/src/texutils.cpp
+++ b/utils/tex2rtf/src/texutils.cpp
@@ -1687,7 +1687,7 @@ bool StringMatch(const wxChar *str1, const wxChar *str2, bool subString,
           Sstr1.MakeUpper();
           Sstr2.MakeUpper();
       }
-      return Sstr2.Index(Sstr1) != wxNOT_FOUND;
+      return Sstr2.Index(Sstr1) != (size_t)wxNOT_FOUND;
    }
    else
       return exact ? wxString(str2).Cmp(str1) == 0 :