diff --git a/types/ramda/index.d.ts b/types/ramda/index.d.ts
index ab132df060..c538d555a0 100644
--- a/types/ramda/index.d.ts
+++ b/types/ramda/index.d.ts
@@ -1525,9 +1525,9 @@ declare namespace R {
          * function and passing it an accumulator value and the current value from the array, and
          * then passing the result to the next call.
          */
-        reduceRight<T, TResult>(fn: (acc: TResult, elem: T) => TResult, acc: TResult, list: T[]): TResult;
-        reduceRight<T, TResult>(fn: (acc: TResult, elem: T) => TResult): (acc: TResult, list: T[]) => TResult;
-        reduceRight<T, TResult>(fn: (acc: TResult, elem: T) => TResult, acc: TResult): (list: T[]) => TResult;
+        reduceRight<T, TResult>(fn: (elem: T, acc: TResult) => TResult, acc: TResult, list: T[]): TResult;
+        reduceRight<T, TResult>(fn: (elem: T, acc: TResult) => TResult): (acc: TResult, list: T[]) => TResult;
+        reduceRight<T, TResult>(fn: (elem: T, acc: TResult) => TResult, acc: TResult): (list: T[]) => TResult;
 
         /**
          * Similar to `filter`, except that it keeps only values for which the given predicate
diff --git a/types/ramda/ramda-tests.ts b/types/ramda/ramda-tests.ts
index 5d8dc09005..0998930d42 100644
--- a/types/ramda/ramda-tests.ts
+++ b/types/ramda/ramda-tests.ts
@@ -328,7 +328,7 @@ R.times(i, 5);
 (() => {
     const pairs = [["a", 1], ["b", 2], ["c", 3]];
 
-    function flattenPairs(acc: [string, number], pair: [string, number]) {
+    function flattenPairs(pair: [string, number], acc: Array<string|number>): Array<string|number> {
         return acc.concat(pair);
     }
 
@@ -911,7 +911,7 @@ type Pair = KeyValuePair<string, number>;
 () => {
     const pairs: Pair[] = [["a", 1], ["b", 2], ["c", 3]];
 
-    function flattenPairs(acc: Pair[], pair: Pair): Pair[] {
+    function flattenPairs(pair: Pair, acc: Array<string|number>): Array<string|number> {
         return acc.concat(pair);
     }