diff --git a/src/scripting.c b/src/scripting.c
index 9282b7fd9..a5c59b113 100644
--- a/src/scripting.c
+++ b/src/scripting.c
@@ -2473,6 +2473,7 @@ void ldbEval(lua_State *lua, sds *argv, int argc) {
             ldbLog(sdscatfmt(sdsempty(),"<error> %s",lua_tostring(lua,-1)));
             lua_pop(lua,1);
             sdsfree(code);
+            sdsfree(expr);
             return;
         }
     }
diff --git a/tests/unit/scripting.tcl b/tests/unit/scripting.tcl
index 2543a0377..fb36d0b80 100644
--- a/tests/unit/scripting.tcl
+++ b/tests/unit/scripting.tcl
@@ -741,3 +741,8 @@ start_server {tags {"scripting repl"}} {
     }
 }
 
+start_server {tags {"scripting"}} {
+    r script debug sync
+    r eval {return 'hello'} 0
+    r eval {return 'hello'} 0
+}