diff --git a/src/types/magick_evaluate_operator.rs b/src/types/magick_evaluate_operator.rs
new file mode 100644
index 0000000..bbfff5e
--- /dev/null
+++ b/src/types/magick_evaluate_operator.rs
@@ -0,0 +1,52 @@
+use crate::bindings;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[repr(u32)]
+pub enum MagickEvaluateOperator {
+    Undefined           = bindings::MagickEvaluateOperator_UndefinedEvaluateOperator,
+    Abs                 = bindings::MagickEvaluateOperator_AbsEvaluateOperator,
+    Add                 = bindings::MagickEvaluateOperator_AddEvaluateOperator,
+    AddModulus          = bindings::MagickEvaluateOperator_AddModulusEvaluateOperator,
+    And                 = bindings::MagickEvaluateOperator_AndEvaluateOperator,
+    Cosine              = bindings::MagickEvaluateOperator_CosineEvaluateOperator,
+    Divide              = bindings::MagickEvaluateOperator_DivideEvaluateOperator,
+    Exponential         = bindings::MagickEvaluateOperator_ExponentialEvaluateOperator,
+    GaussianNoise       = bindings::MagickEvaluateOperator_GaussianNoiseEvaluateOperator,
+    ImpulseNoise        = bindings::MagickEvaluateOperator_ImpulseNoiseEvaluateOperator,
+    LaplacianNoise      = bindings::MagickEvaluateOperator_LaplacianNoiseEvaluateOperator,
+    LeftShift           = bindings::MagickEvaluateOperator_LeftShiftEvaluateOperator,
+    Log                 = bindings::MagickEvaluateOperator_LogEvaluateOperator,
+    Max                 = bindings::MagickEvaluateOperator_MaxEvaluateOperator,
+    Mean                = bindings::MagickEvaluateOperator_MeanEvaluateOperator,
+    Median              = bindings::MagickEvaluateOperator_MedianEvaluateOperator,
+    Min                 = bindings::MagickEvaluateOperator_MinEvaluateOperator,
+    MultiplicativeNoise = bindings::MagickEvaluateOperator_MultiplicativeNoiseEvaluateOperator,
+    Multiply            = bindings::MagickEvaluateOperator_MultiplyEvaluateOperator,
+    Or                  = bindings::MagickEvaluateOperator_OrEvaluateOperator,
+    PoissonNoise        = bindings::MagickEvaluateOperator_PoissonNoiseEvaluateOperator,
+    Pow                 = bindings::MagickEvaluateOperator_PowEvaluateOperator,
+    RightShift          = bindings::MagickEvaluateOperator_RightShiftEvaluateOperator,
+    RootMeanSquare      = bindings::MagickEvaluateOperator_RootMeanSquareEvaluateOperator,
+    Set                 = bindings::MagickEvaluateOperator_SetEvaluateOperator,
+    Sine                = bindings::MagickEvaluateOperator_SineEvaluateOperator,
+    Subtract            = bindings::MagickEvaluateOperator_SubtractEvaluateOperator,
+    Sum                 = bindings::MagickEvaluateOperator_SumEvaluateOperator,
+    ThresholdBlack      = bindings::MagickEvaluateOperator_ThresholdBlackEvaluateOperator,
+    Threshold           = bindings::MagickEvaluateOperator_ThresholdEvaluateOperator,
+    ThresholdWhite      = bindings::MagickEvaluateOperator_ThresholdWhiteEvaluateOperator,
+    UniformNoise        = bindings::MagickEvaluateOperator_UniformNoiseEvaluateOperator,
+    Xor                 = bindings::MagickEvaluateOperator_XorEvaluateOperator,
+    InverseLog          = bindings::MagickEvaluateOperator_InverseLogEvaluateOperator,
+}
+
+impl Default for MagickEvaluateOperator {
+    fn default() -> Self {
+        return MagickEvaluateOperator::Undefined;
+    }
+}
+
+impl From<MagickEvaluateOperator> for bindings::MagickEvaluateOperator {
+    fn from(value: MagickEvaluateOperator) -> Self {
+        return value as bindings::MagickEvaluateOperator;
+    }
+}
diff --git a/src/types/mod.rs b/src/types/mod.rs
index ca39a90..ada8d0f 100644
--- a/src/types/mod.rs
+++ b/src/types/mod.rs
@@ -18,6 +18,7 @@ mod image_type;
 mod interlace_type;
 mod line_cap;
 mod line_join;
+mod magick_evaluate_operator;
 mod magick_function;
 mod metric_type;
 mod orientation_type;
@@ -49,6 +50,7 @@ pub use self::image_type::ImageType;
 pub use self::interlace_type::InterlaceType;
 pub use self::line_cap::LineCap;
 pub use self::line_join::LineJoin;
+pub use self::magick_evaluate_operator::MagickEvaluateOperator;
 pub use self::magick_function::MagickFunction;
 pub use self::metric_type::MetricType;
 pub use self::orientation_type::OrientationType;
diff --git a/src/wand/magick.rs b/src/wand/magick.rs
index 30e6399..b3a177e 100644
--- a/src/wand/magick.rs
+++ b/src/wand/magick.rs
@@ -44,6 +44,7 @@ use crate::{
     GravityType,
     ImageType,
     InterlaceType,
+    MagickEvaluateOperator,
     MagickFunction,
     MetricType,
     OrientationType,
@@ -1201,8 +1202,8 @@ impl MagickWand {
     /// expression to an image.  Use these operators to lighten or darken an image,
     /// to increase or decrease contrast in an image, or to produce the "negative"
     /// of an image.
-    pub fn evaluate_image(&mut self, op: bindings::MagickEvaluateOperator, val: f64) -> Result<()> {
-        let res = unsafe { bindings::MagickEvaluateImage(self.wand, op, val) };
+    pub fn evaluate_image(&mut self, op: MagickEvaluateOperator, val: f64) -> Result<()> {
+        let res = unsafe { bindings::MagickEvaluateImage(self.wand, op.into(), val) };
         match res {
             MagickTrue => Ok(()),
             _ => Err(MagickError("failed to evaluate image")),