diff --git a/README.md b/README.md
index 5c1c5ae..ec5369e 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ Note that implicit multiplication has a higher priority than mulitiplication and
 | Logarithm (base e)        | `ln`                        |
 | Logarithm (base 10)       | `log`                       |
 | sin, arcsin, cosecant     | `sin`, `asin`, `csc`        |
-| cos, arccos, secant       | `cos`, `acos`, `sec`        |
+| cos, arccos, secant       | `cos`, `acos`, `secant`     |
 | tan, arctan, cotan        | `tan`, `atan`, `cot`        |
 | hyperbolic sin, etc       | `sinh`, `asinh`, `csch`     |
 | hyperbolic cos, etc       | `cosh`, `acosh`, `sech`     |
diff --git a/src/tokens/operator.rs b/src/tokens/operator.rs
index ce73f73..bee9cad 100644
--- a/src/tokens/operator.rs
+++ b/src/tokens/operator.rs
@@ -225,27 +225,27 @@ impl Operator {
 			"!"      => {Some( Operator::Factorial )},
 			"sqrt"|"rt"|"√" => {Some( Operator::Sqrt )},
 
-			"abs"    => {Some( Operator::Function(Function::Abs) )},
-			"floor"    => {Some( Operator::Function(Function::Floor) )},
+			"abs"     => {Some( Operator::Function(Function::Abs) )},
+			"floor"   => {Some( Operator::Function(Function::Floor) )},
 			"ceil"    => {Some( Operator::Function(Function::Ceil) )},
-			"round"    => {Some( Operator::Function(Function::Round) )},
-			"ln"    => {Some( Operator::Function(Function::NaturalLog) )},
-			"log"    => {Some( Operator::Function(Function::TenLog) )},
-			"sin"    => {Some( Operator::Function(Function::Sin) )},
-			"cos"    => {Some( Operator::Function(Function::Cos) )},
-			"tan"    => {Some( Operator::Function(Function::Tan) )},
+			"round"   => {Some( Operator::Function(Function::Round) )},
+			"ln"      => {Some( Operator::Function(Function::NaturalLog) )},
+			"log"     => {Some( Operator::Function(Function::TenLog) )},
+			"sin"     => {Some( Operator::Function(Function::Sin) )},
+			"cos"     => {Some( Operator::Function(Function::Cos) )},
+			"tan"     => {Some( Operator::Function(Function::Tan) )},
 			"asin"    => {Some( Operator::Function(Function::Asin) )},
 			"acos"    => {Some( Operator::Function(Function::Acos) )},
 			"atan"    => {Some( Operator::Function(Function::Atan) )},
-			"csc"    => {Some( Operator::Function(Function::Csc) )},
-			"sec"    => {Some( Operator::Function(Function::Sec) )},
-			"cot"    => {Some( Operator::Function(Function::Cot) )},
+			"csc"     => {Some( Operator::Function(Function::Csc) )},
+			"secant"  => {Some( Operator::Function(Function::Sec) )},
+			"cot"     => {Some( Operator::Function(Function::Cot) )},
 			"sinh"    => {Some( Operator::Function(Function::Sinh) )},
 			"cosh"    => {Some( Operator::Function(Function::Cosh) )},
 			"tanh"    => {Some( Operator::Function(Function::Tanh) )},
-			"asinh"    => {Some( Operator::Function(Function::Asinh) )},
-			"acosh"    => {Some( Operator::Function(Function::Acosh) )},
-			"atanh"    => {Some( Operator::Function(Function::Atanh) )},
+			"asinh"   => {Some( Operator::Function(Function::Asinh) )},
+			"acosh"   => {Some( Operator::Function(Function::Acosh) )},
+			"atanh"   => {Some( Operator::Function(Function::Atanh) )},
 			"csch"    => {Some( Operator::Function(Function::Csch) )},
 			"sech"    => {Some( Operator::Function(Function::Sech) )},
 			"coth"    => {Some( Operator::Function(Function::Coth) )},