diff --git a/tests/unit/type/incr.tcl b/tests/unit/type/incr.tcl
index 63bf2e116..b7a135203 100644
--- a/tests/unit/type/incr.tcl
+++ b/tests/unit/type/incr.tcl
@@ -153,6 +153,7 @@ start_server {tags {"incr"}} {
     } {ERR*valid*}
 
     test {No negative zero} {
+        r del foo
         r incrbyfloat foo [expr double(1)/41]
         r incrbyfloat foo [expr double(-1)/41]
         r get foo