diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java
index 3cb5727c37c..83f5ac1fb76 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java
@@ -214,7 +214,7 @@ public abstract class AbstractPythonCodegen extends DefaultCodegen implements Co
                 String defaultValue = String.valueOf(p.getDefault());
                 if (defaultValue != null) {
                     defaultValue = defaultValue.replace("\\", "\\\\")
-                            .replace("'", "\'");
+                            .replace("'", "\\'");
                     if (Pattern.compile("\r\n|\r|\n").matcher(defaultValue).find()) {
                         return "'''" + defaultValue + "'''";
                     } else {
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonClientCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonClientCodegenTest.java
index 8444ffc7960..853f86086ec 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonClientCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonClientCodegenTest.java
@@ -139,7 +139,7 @@ public class PythonClientCodegenTest {
         StringSchema schema = new StringSchema();
         schema.setDefault("Text containing 'single' quote");
         String defaultValue = codegen.toDefaultValue(schema);
-        Assert.assertEquals("'Text containing \'single\' quote'", defaultValue);
+        Assert.assertEquals("'Text containing \\'single\\' quote'", defaultValue);
     }
 
     @Test(description = "test backslash default")