diff --git a/solr/solr-ref-guide/src/variables.adoc b/solr/solr-ref-guide/src/variables.adoc
index 7e12e7517fc..b5afd1133ac 100644
--- a/solr/solr-ref-guide/src/variables.adoc
+++ b/solr/solr-ref-guide/src/variables.adoc
@@ -16,7 +16,7 @@
 // specific language governing permissions and limitations
 // under the License.
 
-== The Let Expressions
+== The Let Expression
 
 The `let` expression sets variables and returns
 the value of the last variable by default. The output of any streaming expression