diff --git a/piker/data/_sharedmem.py b/piker/data/_sharedmem.py
index 8afa3214..2169e262 100644
--- a/piker/data/_sharedmem.py
+++ b/piker/data/_sharedmem.py
@@ -220,7 +220,7 @@ class ShmArray:
         self,
         length: int = 1,
     ) -> np.ndarray:
-        return self.array[-length]
+        return self.array[-length:]
 
     def push(
         self,