diff --git a/Core/apu.c b/Core/apu.c
old mode 100755
new mode 100644
diff --git a/Core/display.c b/Core/display.c
old mode 100755
new mode 100644
diff --git a/Core/gb.c b/Core/gb.c
old mode 100755
new mode 100644
diff --git a/Core/symbol_hash.c b/Core/symbol_hash.c
old mode 100755
new mode 100644