diff --git a/lib/libimhex/source/helpers/encoding_file.cpp b/lib/libimhex/source/helpers/encoding_file.cpp
index 410908e7c..0fbd63ea5 100644
--- a/lib/libimhex/source/helpers/encoding_file.cpp
+++ b/lib/libimhex/source/helpers/encoding_file.cpp
@@ -42,6 +42,10 @@ namespace hex {
                     continue;
                 if (delimiterPos >= line.length())
                     continue;
+                if (delimiterPos >= from.length())
+                    continue;
+                if (delimiterPos >= to.length())
+                    continue;
 
                 from = line.substr(0, delimiterPos);
                 to   = line.substr(delimiterPos + 1);