diff --git a/DroidFish/res/values/strings.xml b/DroidFish/res/values/strings.xml
index 6c6027e..3b997ee 100644
--- a/DroidFish/res/values/strings.xml
+++ b/DroidFish/res/values/strings.xml
@@ -239,7 +239,8 @@ Scid file</i>.\n\
 \n\
 <b>UCI engines</b>\n\
 DroidFish can use third party UCI engines. To use this feature:\n\
-1. Copy one or more UCI engine binaries to the <i>DroidFish/uci</i> directory on the SD card.\n\
+1. Copy one or more UCI engine binaries to the <i>DroidFish/uci</i> directory on the SD card. \
+<b>Note!</b> The binaries must be compiled for Android.\n\
 2. From the menu, choose <i>Select Chess Engine</i> and select the engine to use.\n\
 \n\
 <b>License</b>\n\