diff --git a/modules/Terminal/src/Terminal.cpp b/modules/Terminal/src/Terminal.cpp
index 1c34c5b..4215842 100644
--- a/modules/Terminal/src/Terminal.cpp
+++ b/modules/Terminal/src/Terminal.cpp
@@ -44,13 +44,13 @@ void Terminal::onLoad() {
     }
 
     int returnCode = grantpt(master);
-    if (!returnCode) {
+    if (returnCode != 0) {
         std::cerr << "Error " << errno << " on grantpt()\n";
         std::abort();
     }
 
     returnCode = unlockpt(master);
-    if (!returnCode) {
+    if (returnCode != 0) {
         std::cerr << "Error " << errno << " on unlockpt()\n";
         std::abort();
     }