diff --git a/LICENSE b/LICENSE
old mode 100755
new mode 100644
diff --git a/README.md b/README.md
old mode 100755
new mode 100644
diff --git a/src/chess.cpp b/src/chess.cpp
old mode 100755
new mode 100644
diff --git a/src/constants.h b/src/constants.h
old mode 100755
new mode 100644
diff --git a/src/functions.cpp b/src/functions.cpp
old mode 100755
new mode 100644
diff --git a/src/functions.h b/src/functions.h
old mode 100755
new mode 100644