1 files changed, 4 insertions, 1 deletions

diff --git a/src/export/extract_version_4.c b/src/export/extract_version_4.c
index 252831a..1dbaf40 100644
--- a/src/export/extract_version_4.c
+++ b/src/export/extract_version_4.c
@@ -16,6 +16,7 @@ int main(int argc, char **argv) {
   char respath[32]; /* file_XXXXX\0 */
   int zres = 0, filenum = 0, resfile;
   size_t i, offs = 0, reported = 0;
+  ssize_t temp = 0;
   MAP in;
 
   if( argc != 2 ) exit(111);
@@ -50,7 +51,7 @@ error_continue:
       fprintf( stderr, "Could not open output file %s\n", respath );
       exit(1);
     }
-    (void)write( resfile, output, z.total_out );
+    temp += write( resfile, output, z.total_out );
     close( resfile );
     offs += z.total_in;
 
@@ -66,5 +67,7 @@ error_continue:
   if( reported < 10 )
     printf( "100%% " );
   fflush( stdout );
+  if( !temp )
+    exit(1);
   return 0;
 }