diff --git a/src/buttons.c b/src/buttons.c
index 7fc52776..260c0037 100644
--- a/src/buttons.c
+++ b/src/buttons.c
@@ -32,7 +32,11 @@
     #include <dirent.h>
 #endif
 
+// On Debian, this is already implied in dirent.h
+// I don't know which targets need it and what it does. - yr
+#ifndef _XOPEN_SOURCE
 #define _XOPEN_SOURCE 500
+#endif
 
 #include <fcntl.h>
 #include <stdio.h>
@@ -5533,4 +5537,4 @@ void Button_Brush_container(void)
 byte Any_effect_active(void)
 {
     return Shade_mode||Quick_shade_mode||Colorize_mode||Smooth_mode||Tiling_mode||Smear_mode||Stencil_mode||Mask_mode||Sieve_mode||Snap_mode||Main_tilemap_mode;
-}
\ No newline at end of file
+}
diff --git a/src/main.c b/src/main.c
index 310b3f8b..3e0359ef 100644
--- a/src/main.c
+++ b/src/main.c
@@ -378,9 +378,7 @@ int Analyze_command_line(int argc, char * argv[], char *main_filename, char *mai
         else if (File_exists(argv[index]))
         {
           file_in_command_line ++;
-		  printf("PATH RESOLVE %s\n", argv[index]);
           buffer = Realpath(argv[index], NULL);
-		  printf("returns : %p\n", buffer);
         
           if (file_in_command_line == 1)
           {
diff --git a/src/miscfileformats.c b/src/miscfileformats.c
index 8c4a6c2f..258c026a 100644
--- a/src/miscfileformats.c
+++ b/src/miscfileformats.c
@@ -2963,7 +2963,7 @@ void Load_CM5(T_IO_Context* context)
   FILE *file;
   char filename[MAX_PATH_CHARACTERS];
   byte value = 0;
-  int mod;
+  int mod=0;
   short line = 0;
   int tx, ty;
   byte buffer[48*6/4];
diff --git a/src/oldies.c b/src/oldies.c
index 6134205f..d78f098d 100644
--- a/src/oldies.c
+++ b/src/oldies.c
@@ -408,4 +408,4 @@ byte C64_FLI_enforcer(void)
     
     
   return 0;
-}
\ No newline at end of file
+}