diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
index e95293ede9c..cce70f4ce39 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java
@@ -1578,33 +1578,20 @@ public class DefaultCodegen {
 
 
                 allParams.add(p);
+                // Issue #2561 (neilotoole) : Moved setting of is<Type>Param flags
+                // from here to fromParameter().
                 if (param instanceof QueryParameter) {
-                    p.isQueryParam = new Boolean(true);
                     queryParams.add(p.copy());
                 } else if (param instanceof PathParameter) {
-                    p.required = true;
-                    p.isPathParam = new Boolean(true);
                     pathParams.add(p.copy());
                 } else if (param instanceof HeaderParameter) {
-                    p.isHeaderParam = new Boolean(true);
                     headerParams.add(p.copy());
                 } else if (param instanceof CookieParameter) {
-                    p.isCookieParam = new Boolean(true);
                     cookieParams.add(p.copy());
                 } else if (param instanceof BodyParameter) {
-                    p.isBodyParam = new Boolean(true);
-                    p.isBinary = p.dataType.toLowerCase().startsWith("byte");
                     bodyParam = p;
                     bodyParams.add(p.copy());
                 } else if (param instanceof FormParameter) {
-                    if ("file".equalsIgnoreCase(((FormParameter) param).getType())) {
-                        p.isFile = true;
-                    } else if("file".equals(p.baseType)){
-                    	p.isFile = true;
-                    } else {
-                        p.notFile = true;
-                    }
-                    p.isFormParam = new Boolean(true);
                     formParams.add(p.copy());
                 }
                 if (p.required == null || !p.required) {
@@ -1932,6 +1919,33 @@ public class DefaultCodegen {
         // should be overridden by lang codegen
         setParameterExampleValue(p);
 
+        // Issue #2561 (neilotoole) : Set the is<TYPE>Param flags.
+        // This code has been moved to here from #fromOperation
+        // because these values should be set before calling #postProcessParameter.
+        // See: https://github.com/swagger-api/swagger-codegen/issues/2561
+        if (param instanceof QueryParameter) {
+            p.isQueryParam = true;
+        } else if (param instanceof PathParameter) {
+            p.required = true;
+            p.isPathParam = true;
+        } else if (param instanceof HeaderParameter) {
+            p.isHeaderParam = true;
+        } else if (param instanceof CookieParameter) {
+            p.isCookieParam = true;
+        } else if (param instanceof BodyParameter) {
+            p.isBodyParam = true;
+            p.isBinary = p.dataType.toLowerCase().startsWith("byte");
+        } else if (param instanceof FormParameter) {
+            if ("file".equalsIgnoreCase(((FormParameter) param).getType())) {
+                p.isFile = true;
+            } else if("file".equals(p.baseType)){
+                p.isFile = true;
+            } else {
+                p.notFile = true;
+            }
+            p.isFormParam = true;
+        }
+
         postProcessParameter(p);
         return p;
     }