diff --git a/csharp/ql/src/semmle/code/csharp/dataflow/internal/FlowSummaryImpl.qll b/csharp/ql/src/semmle/code/csharp/dataflow/internal/FlowSummaryImpl.qll
index 723c466042b..c94425d261e 100644
--- a/csharp/ql/src/semmle/code/csharp/dataflow/internal/FlowSummaryImpl.qll
+++ b/csharp/ql/src/semmle/code/csharp/dataflow/internal/FlowSummaryImpl.qll
@@ -650,7 +650,7 @@ module Private {
       interpretSpec(spec, 0, stack)
     }
 
-    predicate interpretSpec(string spec, int idx, SummaryComponentStack stack) {
+    private predicate interpretSpec(string spec, int idx, SummaryComponentStack stack) {
       exists(string c |
         relevantSpec(spec) and
         specLength(spec, idx + 1) and
diff --git a/java/ql/src/semmle/code/java/dataflow/internal/FlowSummaryImpl.qll b/java/ql/src/semmle/code/java/dataflow/internal/FlowSummaryImpl.qll
index 723c466042b..c94425d261e 100644
--- a/java/ql/src/semmle/code/java/dataflow/internal/FlowSummaryImpl.qll
+++ b/java/ql/src/semmle/code/java/dataflow/internal/FlowSummaryImpl.qll
@@ -650,7 +650,7 @@ module Private {
       interpretSpec(spec, 0, stack)
     }
 
-    predicate interpretSpec(string spec, int idx, SummaryComponentStack stack) {
+    private predicate interpretSpec(string spec, int idx, SummaryComponentStack stack) {
       exists(string c |
         relevantSpec(spec) and
         specLength(spec, idx + 1) and