1 files changed, 2 insertions, 2 deletions

diff --git a/tools/tool.h b/tools/tool.h
index 8fa726a..3488f34 100644
--- a/tools/tool.h
+++ b/tools/tool.h
@@ -91,7 +91,7 @@ generatetable(const char *solver, char **buf)
         long long int size, gensize;
 
         size = nissy_datasize(solver);
-        if (size == -1) {
+        if (size < 0) {
                 printf("Error getting table size.\n");
                 return -1;
         }
@@ -101,7 +101,7 @@ generatetable(const char *solver, char **buf)
 
         if (gensize != size) {
                 printf("Error generating table");
-                if (gensize != -1)
+                if (gensize == NISSY_OK)
                         printf(" (got %lld bytes)", gensize);
                 printf("\n");
                 return -2;