diff --git a/Makefile b/Makefile
index 16ad2662e67975f6aaca186b4000f88ffabbeb39..051611b531db6d308ddb798318057bfecb0e0216 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ SHELL = /bin/bash
 
 NICENESS = 10
 
-DETECTED_LANGUAGES = ces+deu+lat
+DETECTED_LANGUAGES = ces+deu+lat+pol+fra+eng+rus+ita+slk
 
 TESSERACT_RUN = $(TESSERACT)
 TESSERACT_OPTIONS = --psm 3 --tessdata-dir $(TESSERACT_DATA) $(TESSERACT_OUTPUT_FORMATS)