diff --git a/src/collections/raw_vec.rs b/src/collections/raw_vec.rs
index 0abf43a06ac1d39f500751c698e40150ded015b4..088430ecf66725df09cb21e7c4edf7b675f80a37 100644
--- a/src/collections/raw_vec.rs
+++ b/src/collections/raw_vec.rs
@@ -70,7 +70,7 @@ impl<T: Sized> RawVec<T> {
             debug_assert!(additional > 0);
             let new_cap = self.len.checked_add(additional).unwrap();
             let new_cap = cmp::max(new_cap, self.cap * Self::GROWTH_RATE);
-            
+
             let layout = Layout::array::<T>(new_cap)
                 .map_err(|_| AllocError::CapacityOverflow)?;
             debug_assert_eq!(new_cap * Self::T_SIZE, layout.size());
@@ -83,7 +83,7 @@ impl<T: Sized> RawVec<T> {
                     let old_base = self.base as *mut u8;
                     let (old_size, old_layout) = self.current_layout();
 
-                    ptr::copy_nonoverlapping(new_base, old_base, old_size);
+                    ptr::copy_nonoverlapping(old_base, new_base, old_size);
                     dealloc(old_base, old_layout);
                 }