diff --git a/pkg/analyzer/analyzer.go b/pkg/analyzer/analyzer.go
index 16217a1..36bb8d1 100644
--- a/pkg/analyzer/analyzer.go
+++ b/pkg/analyzer/analyzer.go
@@ -183,6 +183,7 @@ func (nom namedOccurrenceMap) checkExpression(candidate ast.Expr, ifPos token.Po
 		for _, arg := range v.Args {
 			nom.checkExpression(arg, ifPos)
 		}
+		nom.checkExpression(v.Fun, ifPos)
 		if fun, ok := v.Fun.(*ast.SelectorExpr); ok {
 			nom.checkExpression(fun.X, ifPos)
 		}
diff --git a/testdata/testdata.go b/testdata/testdata.go
index 973a694..8e51325 100644
--- a/testdata/testdata.go
+++ b/testdata/testdata.go
@@ -87,6 +87,14 @@ func notUsed_DeferStmt_OK() {
 	defer noOp2(v)
 }
 
+func notUsed_FuncDecl_OK(a func()) {
+	v := a
+	if v == nil {
+		return
+	}
+	v()
+}
+
 func notUsed_IfStmt_CondBinaryExpr_OK() {
 	v := getValue()
 	if v != nil {