diff --git a/Source/exehead/config.h b/Source/exehead/config.h
index 144c02e6..89ee0ea6 100644
--- a/Source/exehead/config.h
+++ b/Source/exehead/config.h
@@ -328,6 +328,9 @@
   #ifndef NSIS_SUPPORT_STACK
     #error NSIS_CONFIG_PLUGIN_SUPPORT relies on NSIS_SUPPORT_STACK, but NSIS_SUPPORT_STACK is not defined
   #endif
+  #ifndef NSIS_SUPPORT_FNUTIL
+    #error NSIS_CONFIG_PLUGIN_SUPPORT relies on NSIS_SUPPORT_FNUTIL, but NSIS_SUPPORT_FNUTIL is not defined
+  #endif
 #endif
 
 #if NSIS_MAX_INST_TYPES > 30