diff --git a/prnt/hpps/hppsfilter.c b/prnt/hpps/hppsfilter.c
index dbf6449..9029c66 100644
--- a/prnt/hpps/hppsfilter.c
+++ b/prnt/hpps/hppsfilter.c
@@ -104,7 +104,7 @@ static void open_tempbookletfile(char *mode)
     if(ptempbooklet_file == NULL)
     {
             fprintf(stderr, "ERROR: Unable to open temp file %s\n", temp_filename);
-            return 1;
+            return;
     }  
     chmod(temp_filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
 
diff --git a/scan/sane/hpaio.c b/scan/sane/hpaio.c
index f114105..a88c822 100644
--- a/scan/sane/hpaio.c
+++ b/scan/sane/hpaio.c
@@ -407,19 +407,19 @@ extern SANE_Status sane_hpaio_open(SANE_String_Const devicename, SANE_Handle * p
 extern void sane_hpaio_close(SANE_Handle handle)
 {
     if (strcmp(*((char **)handle), "MARVELL") == 0)
-       return marvell_close(handle);
+       marvell_close(handle);
     if (strcmp(*((char **)handle), "SOAP") == 0)
-       return soap_close(handle);
+       soap_close(handle);
     if (strcmp(*((char **)handle), "SOAPHT") == 0)
-       return soapht_close(handle);
+       soapht_close(handle);
     if (strcmp(*((char **)handle), "LEDM") == 0)
-       return ledm_close(handle);
+       ledm_close(handle);
     if (strcmp(*((char **)handle), "SCL-PML") == 0)
-       return sclpml_close(handle);
+       sclpml_close(handle);
     if (strcmp(*((char **)handle), "ESCL") == 0)
-       return escl_close(handle);
+       escl_close(handle);
     if (strcmp(*((char **)handle), "ORBLITE") == 0)
-       return orblite_close(handle);
+       orblite_close(handle);
 }  /* sane_hpaio_close() */
 
 extern const SANE_Option_Descriptor * sane_hpaio_get_option_descriptor(SANE_Handle handle, SANE_Int option)
@@ -540,19 +540,19 @@ extern SANE_Status sane_hpaio_read(SANE_Handle handle, SANE_Byte *data, SANE_Int
 extern void sane_hpaio_cancel( SANE_Handle handle )
 {
     if (strcmp(*((char **)handle), "MARVELL") == 0)
-       return marvell_cancel(handle);
+       marvell_cancel(handle);
     if (strcmp(*((char **)handle), "SOAP") == 0)
-       return soap_cancel(handle);
+       soap_cancel(handle);
     if (strcmp(*((char **)handle), "SOAPHT") == 0)
-       return soapht_cancel(handle);
+       soapht_cancel(handle);
     if (strcmp(*((char **)handle), "LEDM") == 0)
-       return ledm_cancel(handle);
+       ledm_cancel(handle);
     if (strcmp(*((char **)handle), "SCL-PML") == 0)
-       return sclpml_cancel(handle);
+       sclpml_cancel(handle);
     if (strcmp(*((char **)handle), "ESCL") == 0)
-       return escl_cancel(handle);
+       escl_cancel(handle);
     if (strcmp(*((char **)handle), "ORBLITE") == 0)
-       return orblite_cancel(handle);
+       orblite_cancel(handle);
 }  /* sane_hpaio_cancel() */
 
 extern SANE_Status sane_hpaio_set_io_mode(SANE_Handle handle, SANE_Bool nonBlocking)