diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
index 97e859e80c5..062443e1d27 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
@@ -5177,6 +5177,15 @@ public class DefaultCodegen implements CodegenConfig {
         }
     }
 
+    protected void updateParameterForNumber(CodegenParameter codegenParameter, Schema parameterSchema) {
+        codegenParameter.isPrimitiveType = true;
+        if (ModelUtils.isFloatSchema(parameterSchema)) { // float
+            codegenParameter.isFloat = true;
+        } else if (ModelUtils.isDoubleSchema(parameterSchema)) { // double
+            codegenParameter.isDouble = true;
+        }
+    }
+
     /**
      * Convert OAS Parameter object to Codegen Parameter object
      *
@@ -5307,12 +5316,7 @@ public class DefaultCodegen implements CodegenConfig {
         } else if (ModelUtils.isBooleanSchema(parameterSchema)) {
             codegenParameter.isPrimitiveType = true;
         } else if (ModelUtils.isNumberSchema(parameterSchema)) {
-            codegenParameter.isPrimitiveType = true;
-            if (ModelUtils.isFloatSchema(parameterSchema)) { // float
-                codegenParameter.isFloat = true;
-            } else if (ModelUtils.isDoubleSchema(parameterSchema)) { // double
-                codegenParameter.isDouble = true;
-            }
+            updateParameterForNumber(codegenParameter, parameterSchema);
         } else if (ModelUtils.isIntegerSchema(parameterSchema)) { // integer type
             codegenParameter.isPrimitiveType = true;
             if (ModelUtils.isLongSchema(parameterSchema)) { // int64/long format
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFastAPIServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFastAPIServerCodegen.java
index 5b14b738f07..6582f2c9b40 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFastAPIServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFastAPIServerCodegen.java
@@ -341,4 +341,14 @@ public class PythonFastAPIServerCodegen extends AbstractPythonCodegen {
         }
         return "var_" + name;
     }
+
+    @Override
+    protected void updateParameterForNumber(CodegenParameter codegenParameter, Schema parameterSchema) {
+        mapNumberTo = "float";
+        if (ModelUtils.isNumberSchema(parameterSchema) || (ModelUtils.isFloatSchema(parameterSchema))) { // Number or float is a float
+            codegenParameter.isFloat = true;
+        } else if (ModelUtils.isDoubleSchema(parameterSchema)) { // double
+            codegenParameter.isDouble = true;
+        }
+    }
 }