diff --git a/AdaptiveBrightness/monitor_control_linux.cpp b/AdaptiveBrightness/monitor_control_linux.cpp
index 42c918e..7976ffb 100644
--- a/AdaptiveBrightness/monitor_control_linux.cpp
+++ b/AdaptiveBrightness/monitor_control_linux.cpp
@@ -6,7 +6,7 @@
 
 std::vector<Monitor> enumerateMonitors()
 {
-    assert("Not implemented");
+    assert(!"Not implemented");
     return {};
 }
 
diff --git a/AdaptiveBrightness/monitor_linux.cpp b/AdaptiveBrightness/monitor_linux.cpp
index 1c321bb..0c799e2 100644
--- a/AdaptiveBrightness/monitor_linux.cpp
+++ b/AdaptiveBrightness/monitor_linux.cpp
@@ -6,7 +6,7 @@
 
 Monitor::Monitor()
 {
-    assert("Not implemented");
+    assert(!"Not implemented");
 }
 
 #endif