diff --git a/exercises/03_if/if1.rs b/exercises/03_if/if1.rs
index d2afccf8..614ac7c0 100644
--- a/exercises/03_if/if1.rs
+++ b/exercises/03_if/if1.rs
@@ -2,14 +2,15 @@
 //
 // Execute `rustlings hint if1` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
 
 pub fn bigger(a: i32, b: i32) -> i32 {
-    // Complete this function to return the bigger number!
-    // If both numbers are equal, any of them can be returned.
-    // Do not use:
-    // - another function call
-    // - additional variables
+    if a > b {
+        return a;
+    } else if a < b {
+        return b;
+    }
+
+    a
 }
 
 // Don't mind this for now :)
diff --git a/exercises/03_if/if2.rs b/exercises/03_if/if2.rs
index f512f13f..40c07802 100644
--- a/exercises/03_if/if2.rs
+++ b/exercises/03_if/if2.rs
@@ -5,13 +5,14 @@
 //
 // Execute `rustlings hint if2` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
 
 pub fn foo_if_fizz(fizzish: &str) -> &str {
     if fizzish == "fizz" {
         "foo"
+    } else if fizzish == "fuzz" {
+        "bar"
     } else {
-        1
+        "baz"
     }
 }
 
diff --git a/exercises/03_if/if3.rs b/exercises/03_if/if3.rs
index 16962740..022d56a8 100644
--- a/exercises/03_if/if3.rs
+++ b/exercises/03_if/if3.rs
@@ -2,17 +2,16 @@
 //
 // Execute `rustlings hint if3` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
 
 pub fn animal_habitat(animal: &str) -> &'static str {
     let identifier = if animal == "crab" {
         1
     } else if animal == "gopher" {
-        2.0
+        2
     } else if animal == "snake" {
         3
     } else {
-        "Unknown"
+        0
     };
 
     // DO NOT CHANGE THIS STATEMENT BELOW