diff --git a/docs-core/src/main/java/com/sismics/docs/core/util/FileUtil.java b/docs-core/src/main/java/com/sismics/docs/core/util/FileUtil.java
index 45557465..683c3342 100644
--- a/docs-core/src/main/java/com/sismics/docs/core/util/FileUtil.java
+++ b/docs-core/src/main/java/com/sismics/docs/core/util/FileUtil.java
@@ -56,6 +56,7 @@ public class FileUtil {
 
         // OCR the file
         try {
+            log.info("Starting OCR with TESSDATA_PREFIX=" + System.getenv("TESSDATA_PREFIX") + ";LC_NUMERIC=" + System.getenv("LC_NUMERIC"));
             instance.setLanguage(document.getLanguage());
             content = instance.doOCR(image);
         } catch (Exception e) {