diff --git a/source/Core/Src/settingsGUI.cpp b/source/Core/Src/settingsGUI.cpp
index 13eb559a..7139a5a4 100644
--- a/source/Core/Src/settingsGUI.cpp
+++ b/source/Core/Src/settingsGUI.cpp
@@ -24,7 +24,7 @@ static void displayInputMinVRange(void);
 static void displayQCInputV(void);
 #endif /* POW_QC */
 
-#if defined POW_PD || POW_PD_EXT == 2
+#if defined(POW_PD) || POW_PD_EXT == 2
 static void displayPDNegTimeout(void);
 static void displayUSBPDMode(void);
 #endif /* POW_PD */