diff --git a/benchmark/cmake/modules/AddSwiftBenchmarkSuite.cmake b/benchmark/cmake/modules/AddSwiftBenchmarkSuite.cmake
index 1f84bb829d2..2ca6532648d 100644
--- a/benchmark/cmake/modules/AddSwiftBenchmarkSuite.cmake
+++ b/benchmark/cmake/modules/AddSwiftBenchmarkSuite.cmake
@@ -701,11 +701,11 @@ function(swift_benchmark_compile)
           COMMAND "${swift-bin-dir}/Benchmark_Driver" "run"
                   "-o" "O" "--output-dir" "${CMAKE_CURRENT_BINARY_DIR}/logs"
                   "--swift-repo" "${SWIFT_SOURCE_DIR}"
-                  "--iterations" "${SWIFT_BENCHMARK_NUM_O_ITERATIONS}"
+                  "--independent-samples" "${SWIFT_BENCHMARK_NUM_O_ITERATIONS}"
           COMMAND "${swift-bin-dir}/Benchmark_Driver" "run"
                   "-o" "Onone" "--output-dir" "${CMAKE_CURRENT_BINARY_DIR}/logs"
                   "--swift-repo" "${SWIFT_SOURCE_DIR}"
-                  "--iterations" "${SWIFT_BENCHMARK_NUM_ONONE_ITERATIONS}"
+                  "--independent-samples" "${SWIFT_BENCHMARK_NUM_ONONE_ITERATIONS}"
           COMMAND "${swift-bin-dir}/Benchmark_Driver" "compare"
                   "--log-dir" "${CMAKE_CURRENT_BINARY_DIR}/logs"
                   "--swift-repo" "${SWIFT_SOURCE_DIR}"
diff --git a/benchmark/scripts/Benchmark_Driver b/benchmark/scripts/Benchmark_Driver
index adf182b4d0c..3812ae4029b 100755
--- a/benchmark/scripts/Benchmark_Driver
+++ b/benchmark/scripts/Benchmark_Driver
@@ -167,7 +167,7 @@ class BenchmarkDriver(object):
 
         return reduce(merge_results,
                       [self.run(test, measure_memory=True)
-                       for _ in range(self.args.iterations)])
+                       for _ in range(self.args.independent_samples)])
 
     def log_results(self, output, log_file=None):
         """Log output to `log_file`.
@@ -603,7 +603,7 @@ def parse_args(args):
         help='Run benchmarks and output results to stdout',
         parents=[shared_benchmarks_parser])
     run_parser.add_argument(
-        '-i', '--iterations',
+        '-i', '--independent-samples',
         help='number of times to run each test (default: 1)',
         type=positive_int, default=1)
     run_parser.add_argument(
diff --git a/benchmark/scripts/test_Benchmark_Driver.py b/benchmark/scripts/test_Benchmark_Driver.py
index c4dd29192c0..c35e8093fd6 100644
--- a/benchmark/scripts/test_Benchmark_Driver.py
+++ b/benchmark/scripts/test_Benchmark_Driver.py
@@ -96,15 +96,16 @@ class Test_parse_args(unittest.TestCase):
              "(choose from 'O', 'Onone', 'Osize')"],
             err.getvalue())
 
-    def test_iterations(self):
-        self.assertEquals(parse_args(['run']).iterations, 1)
-        self.assertEquals(parse_args(['run', '-i', '3']).iterations, 3)
+    def test_independent_samples(self):
+        self.assertEquals(parse_args(['run']).independent_samples, 1)
+        self.assertEquals(parse_args(['run', '-i', '3']).independent_samples,
+                          3)
         with captured_output() as (out, err):
             self.assertRaises(SystemExit,
                               parse_args, ['run', '-i', '-3'])
         self.assert_contains(
-            ['error:',
-             "argument -i/--iterations: invalid positive_int value: '-3'"],
+            ['error:', "argument -i/--independent-samples: " +
+             "invalid positive_int value: '-3'"],
             err.getvalue())
 
     def test_output_dir(self):
@@ -279,7 +280,7 @@ class TestBenchmarkDriverRunningTests(unittest.TestCase):
             ('/benchmarks/Benchmark_O', 'b', '--memory'))
 
     def test_run_benchmark_independent_samples(self):
-        self.driver.args.iterations = 3
+        self.driver.args.independent_samples = 3
         r = self.driver.run_independent_samples('b1')
         self.assertEquals(self.subprocess_mock.calls.count(
             ('/benchmarks/Benchmark_O', 'b1', '--memory')), 3)