diff --git a/modelconverter/packages/rvc2/exporter.py b/modelconverter/packages/rvc2/exporter.py
index a8e73eb..2bc346c 100644
--- a/modelconverter/packages/rvc2/exporter.py
+++ b/modelconverter/packages/rvc2/exporter.py
@@ -120,7 +120,7 @@ def _export_openvino_ir(self) -> Path:
         scale_values_str = ""
         for name, inp in self.inputs.items():
             # Append mean values in a similar style
-            if inp.mean_values is not None:
+            if inp.is_color_input and inp.mean_values is not None:
                 if mean_values_str:
                     mean_values_str += ","
                 mean_values_str += (
@@ -128,7 +128,7 @@ def _export_openvino_ir(self) -> Path:
                 )
 
             # Append scale values in a similar style
-            if inp.scale_values is not None:
+            if inp.is_color_input and inp.scale_values is not None:
                 if scale_values_str:
                     scale_values_str += ","
                 scale_values_str += (
diff --git a/modelconverter/utils/config.py b/modelconverter/utils/config.py
index f970cf6..e617434 100644
--- a/modelconverter/utils/config.py
+++ b/modelconverter/utils/config.py
@@ -141,6 +141,10 @@ class InputConfig(OutputConfig):
     def encoding_mismatch(self) -> bool:
         return self.encoding.from_ != self.encoding.to
 
+    @property
+    def is_color_input(self) -> bool:
+        return self.encoding.from_ in {Encoding.RGB, Encoding.BGR}
+
     @model_validator(mode="after")
     def _validate_grayscale_inputs(self) -> Self:
         if self.layout is None: