diff --git a/icu4c/source/test/intltest/rbbitst.cpp b/icu4c/source/test/intltest/rbbitst.cpp
index 0387d3d20c2..01ec2df68da 100644
--- a/icu4c/source/test/intltest/rbbitst.cpp
+++ b/icu4c/source/test/intltest/rbbitst.cpp
@@ -572,6 +572,7 @@ void RBBITest::TestBug3818() {
         errln("Fail at file %s, line %d expected start of word at 4, got %d",
             __FILE__, __LINE__, startOfSecondWord);
     }
+    delete bi;
 }
 
 //---------------------------------------------