diff --git a/libs/picomodel/lwo/lwio.c b/libs/picomodel/lwo/lwio.c
index ec74932f..083ffcdb 100644
--- a/libs/picomodel/lwo/lwio.c
+++ b/libs/picomodel/lwo/lwio.c
@@ -311,7 +311,7 @@ int sgetI1( unsigned char **bp )
    i = **bp;
    if ( i > 127 ) i -= 256;
    flen += 1;
-   *bp++;
+   (*bp)++;
    return i;
 }
 
@@ -349,7 +349,7 @@ unsigned char sgetU1( unsigned char **bp )
    if ( flen == FLEN_ERROR ) return 0;
    c = **bp;
    flen += 1;
-   *bp++;
+   (*bp)++;
    return c;
 }