diff --git a/src/librustc_typeck/check/mod.rs b/src/librustc_typeck/check/mod.rs
index eb0ef30d396..85df5d67ff6 100644
--- a/src/librustc_typeck/check/mod.rs
+++ b/src/librustc_typeck/check/mod.rs
@@ -1711,7 +1711,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
 
     /// Apply "fallbacks" to some types
     /// ! gets replaced with (), unconstrained ints with i32, and unconstrained floats with f64.
-    pub fn default_type_parameters(&self) {
+    fn default_type_parameters(&self) {
         use middle::ty::UnconstrainedNumeric::{UnconstrainedInt, UnconstrainedFloat, Neither};
         for ty in &self.infcx().unsolved_variables() {
             let resolved = self.infcx().resolve_type_vars_if_possible(ty);