diff --git a/exercises/11_hashmaps/hashmaps3.rs b/exercises/11_hashmaps/hashmaps3.rs
index 7e9584d1..5b390ab9 100644
--- a/exercises/11_hashmaps/hashmaps3.rs
+++ b/exercises/11_hashmaps/hashmaps3.rs
@@ -17,7 +17,7 @@ struct TeamScores {
 
 fn build_scores_table(results: &str) -> HashMap<&str, TeamScores> {
     // The name of the team is the key and its associated struct is the value.
-    let mut scores = HashMap::new();
+    let mut scores = HashMap::<&str, TeamScores>::new();
 
     for line in results.lines() {
         let mut split_iterator = line.split(',');
diff --git a/solutions/11_hashmaps/hashmaps3.rs b/solutions/11_hashmaps/hashmaps3.rs
index 41da784b..433b16c3 100644
--- a/solutions/11_hashmaps/hashmaps3.rs
+++ b/solutions/11_hashmaps/hashmaps3.rs
@@ -17,7 +17,7 @@ struct TeamScores {
 
 fn build_scores_table(results: &str) -> HashMap<&str, TeamScores> {
     // The name of the team is the key and its associated struct is the value.
-    let mut scores = HashMap::new();
+    let mut scores = HashMap::<&str, TeamScores>::new();
 
     for line in results.lines() {
         let mut split_iterator = line.split(',');