diff --git a/src/calc/entries.rs b/src/calc/entries.rs
index b6dbbb6..4a03d22 100644
--- a/src/calc/entries.rs
+++ b/src/calc/entries.rs
@@ -122,6 +122,13 @@ impl CalculatorEntry for Entry {
             Self::Matrix(matrix) => matrix.is_valid(),
         }
     }
+    fn validate(self) -> CalculatorResult<Entry> {
+        match self {
+            Self::Number(number) => number.validate(),
+            Self::Vector(vector) => vector.validate(),
+            Self::Matrix(matrix) => matrix.validate(),
+        }
+    }
     fn negate(&self) -> CalculatorResult<Self> {
         match self {
             Self::Number(number) => number.negate(),
@@ -274,6 +281,14 @@ impl CalculatorEntry for Matrix {
                 // The dimensions are not zero
                 && self.dimensions.rows > 0 && self.dimensions.columns > 0
     }
+    fn validate(self) -> CalculatorResult<Entry> {
+        if self.is_valid() {
+            Ok(Entry::Matrix(self))
+        } else {
+            Err(CalculatorError::ArithmeticError)
+        }
+    }
+
     fn format_entry(&self, display_mode: &CalculatorDisplayMode) -> String {
         format!(
             "[ {} ]",
@@ -459,15 +474,6 @@ impl Matrix {
         .validate()
     }
 
-    // TODO: Should validate be put in the trait?
-    pub fn validate(self) -> CalculatorResult<Entry> {
-        if self.is_valid() {
-            Ok(Entry::Matrix(self))
-        } else {
-            Err(CalculatorError::ArithmeticError)
-        }
-    }
-
     fn iterated_unary(
         &self,
         op: impl Fn(&Vector) -> CalculatorResult<Entry>,
@@ -541,6 +547,14 @@ impl CalculatorEntry for Vector {
     fn is_valid(&self) -> bool {
         self.values.iter().all(|number| number.is_valid())
     }
+    fn validate(self) -> CalculatorResult<Entry> {
+        if self.is_valid() {
+            Ok(Entry::Vector(self))
+        } else {
+            Err(CalculatorError::ArithmeticError)
+        }
+    }
+
     fn format_entry(&self, display_mode: &CalculatorDisplayMode) -> String {
         format!(
             "[{}]",
@@ -691,14 +705,6 @@ impl Vector {
         .validate()
     }
 
-    fn validate(self) -> CalculatorResult<Entry> {
-        if self.is_valid() {
-            Ok(Entry::Vector(self))
-        } else {
-            Err(CalculatorError::ArithmeticError)
-        }
-    }
-
     fn iterated_unary(
         &self,
         op: impl Fn(&Number) -> CalculatorResult<Entry>,
@@ -783,6 +789,14 @@ impl CalculatorEntry for Number {
     fn is_valid(&self) -> bool {
         !self.value.is_nan() && !self.value.is_infinite()
     }
+    fn validate(self) -> CalculatorResult<Entry> {
+        if self.is_valid() {
+            Ok(Entry::Number(self))
+        } else {
+            Err(CalculatorError::ArithmeticError)
+        }
+    }
+
     fn negate(&self) -> CalculatorResult<Entry> {
         Ok(Entry::Number(Self { value: -self.value }))
     }
@@ -941,14 +955,6 @@ impl CalculatorEntry for Number {
 impl Number {
     pub const ZERO: Self = Self { value: 0.0_f64 };
 
-    fn validate(&self) -> CalculatorResult<Entry> {
-        if self.is_valid() {
-            Ok(Entry::Number(*self))
-        } else {
-            Err(CalculatorError::ArithmeticError)
-        }
-    }
-
     fn iterated_binary_vec(
         self,
         vector: &Vector,
@@ -997,6 +1003,8 @@ where
 {
     // Misc
     fn is_valid(&self) -> bool;
+    /// Turns self into a valid entry
+    fn validate(self) -> CalculatorResult<Entry>;
     fn format_entry(&self, display_mode: &CalculatorDisplayMode) -> String;
     fn to_editable_string(&self) -> CalculatorResult<String>;
     // Mathematical operations