diff --git a/tools/kiss_fastfir.c b/tools/kiss_fastfir.c
index 1c96216..4560aa3 100644
--- a/tools/kiss_fastfir.c
+++ b/tools/kiss_fastfir.c
@@ -362,7 +362,7 @@ void do_file_filter(
     n_samps_buf = 8*4096/sizeof(kffsamp_t); 
     n_samps_buf = nfft + 4*(nfft-n_imp_resp+1);
 
-    if (verbose) fprintf(stderr,"bufsize=%d\n",sizeof(kffsamp_t)*n_samps_buf );
+    if (verbose) fprintf(stderr,"bufsize=%d\n",(int)(sizeof(kffsamp_t)*n_samps_buf) );
      
 
     /*allocate space and initialize pointers */
@@ -449,10 +449,12 @@ int main(int argc,char**argv)
     }
     fseek(filtfile,0,SEEK_END);
     nh = ftell(filtfile) / sizeof(kffsamp_t);
-    if (verbose) fprintf(stderr,"%d samples in FIR filter\n",nh);
+    if (verbose) fprintf(stderr,"%d samples in FIR filter\n",(int)nh);
     h = (kffsamp_t*)malloc(sizeof(kffsamp_t)*nh);
     fseek(filtfile,0,SEEK_SET);
-    fread(h,sizeof(kffsamp_t),nh,filtfile);
+    if (fread(h,sizeof(kffsamp_t),nh,filtfile) != nh)
+        fprintf(stderr,"short read on filter file\n");
+
     fclose(filtfile);
  
     if (use_direct)