diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index d247f90baa0..d7d614547f5 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2020-05-15  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* gcc.target/powerpc/cnttzdm-0.c: Use lp64.
+
 2020-05-15  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	* gcc.target/powerpc/cntlzdm-0.c: Use lp64 instead of powerpc64.
diff --git a/gcc/testsuite/gcc.target/powerpc/cnttzdm-0.c b/gcc/testsuite/gcc.target/powerpc/cnttzdm-0.c
index 36acc0bf138..0b434bef949 100644
--- a/gcc/testsuite/gcc.target/powerpc/cnttzdm-0.c
+++ b/gcc/testsuite/gcc.target/powerpc/cnttzdm-0.c
@@ -1,3 +1,4 @@
+/* { dg-require-effective-target lp64 } */
 /* { dg-options "-mdejagnu-cpu=future" } */
 
 extern void abort (void);