diff --git a/src/co65/convert.c b/src/co65/convert.c
index 1edd23190..bf50fb539 100644
--- a/src/co65/convert.c
+++ b/src/co65/convert.c
@@ -352,7 +352,7 @@ static void ConvertZeropageSeg (FILE* F, const O65Data* D)
 
 
 
-void Convert (const O65Data* D, const char* OutputFile)
+void Convert (const O65Data* D)
 /* Convert the o65 file in D using the given output file. */
 {
     FILE*       F;
@@ -435,10 +435,10 @@ void Convert (const O65Data* D, const char* OutputFile)
         return;
     }
 
-    /* Open the output file */                                                    
-    F = fopen (OutputFile, "wb");
+    /* Open the output file */
+    F = fopen (OutputName, "wb");
     if (F == 0) {
-        Error ("Cannot open `%s': %s", OutputFile, strerror (errno));
+        Error ("Cannot open `%s': %s", OutputName, strerror (errno));
     }
 
     /* Create a header */
diff --git a/src/co65/convert.h b/src/co65/convert.h
index 5773fd461..b7512d3b0 100644
--- a/src/co65/convert.h
+++ b/src/co65/convert.h
@@ -55,8 +55,8 @@ struct O65Data;
 
 
 
-void Convert (const struct O65Data* D, const char* OutputFile);
-/* Convert the o65 file in D using the given output file. */
+void Convert (const struct O65Data* D);
+/* Convert the o65 file in D */ 
 
 
 
diff --git a/src/co65/main.c b/src/co65/main.c
index adb176637..e90be9f09 100644
--- a/src/co65/main.c
+++ b/src/co65/main.c
@@ -295,14 +295,14 @@ static void OptZeropageName (const char* Opt attribute ((unused)), const char* A
 
 
 
-static void ConvertOneFile (const char* InputFile, const char* OutputFile)
+static void DoConversion (void)
 /* Do file conversion */
 {
     /* Read the o65 file into memory */
-    O65Data* D = ReadO65File (InputFile);
+    O65Data* D = ReadO65File (InputName);
 
     /* Do the conversion */
-    Convert (D, OutputFile);
+    Convert (D);
 
     /* Free the o65 module data */
     /* ### */
@@ -410,7 +410,7 @@ int main (int argc, char* argv [])
     }
 
     /* Do the conversion */
-    ConvertOneFile (InputName, OutputName);
+    DoConversion ();
 
     /* Return an apropriate exit code */
     return EXIT_SUCCESS;