diff --git a/tools/dtrace/slowest-queries.d b/tools/dtrace/slowest-queries.d
index 521b66c7fac..40e43fa2521 100755
--- a/tools/dtrace/slowest-queries.d
+++ b/tools/dtrace/slowest-queries.d
@@ -1,6 +1,6 @@
 #!/usr/sbin/dtrace -qs
 
-#pragma strsize=4k
+#pragma D option strsize=4k
 
 /* Print out the slowest 5 queries every 10 seconds. */
 
diff --git a/tools/dtrace/trace-db-queries.d b/tools/dtrace/trace-db-queries.d
index b1223447d42..033d8490841 100755
--- a/tools/dtrace/trace-db-queries.d
+++ b/tools/dtrace/trace-db-queries.d
@@ -1,6 +1,6 @@
 #!/usr/sbin/dtrace -qs
 
-#pragma strsize=16k
+#pragma D option strsize=16k
 
 /* Trace all queries to the control plane database with their latency */