diff --git a/cpp/benchmarks/CMakeLists.txt b/cpp/benchmarks/CMakeLists.txt
index cb4ead20d00..4d0a16c5372 100644
--- a/cpp/benchmarks/CMakeLists.txt
+++ b/cpp/benchmarks/CMakeLists.txt
@@ -194,17 +194,11 @@ ConfigureBench(FILL_BENCH filling/repeat.cpp)
 # ##################################################################################################
 # * groupby benchmark -----------------------------------------------------------------------------
 ConfigureBench(
-  GROUPBY_BENCH
-  groupby/group_sum.cu
-  groupby/group_nth.cu
-  groupby/group_shift.cu
-  groupby/group_struct_values.cpp
-  groupby/group_no_requests.cu
-  groupby/group_scan.cu
-  groupby/group_rank_benchmark.cu
+  GROUPBY_BENCH groupby/group_sum.cpp groupby/group_nth.cpp groupby/group_shift.cpp
+  groupby/group_struct_values.cpp groupby/group_no_requests.cpp groupby/group_scan.cpp
 )
 
-ConfigureNVBench(GROUPBY_NVBENCH groupby/group_rank_benchmark.cu groupby/group_struct_keys.cpp)
+ConfigureNVBench(GROUPBY_NVBENCH groupby/group_rank.cpp groupby/group_struct_keys.cpp)
 
 # ##################################################################################################
 # * hashing benchmark -----------------------------------------------------------------------------
diff --git a/cpp/benchmarks/groupby/group_no_requests.cu b/cpp/benchmarks/groupby/group_no_requests.cpp
similarity index 100%
rename from cpp/benchmarks/groupby/group_no_requests.cu
rename to cpp/benchmarks/groupby/group_no_requests.cpp
diff --git a/cpp/benchmarks/groupby/group_nth.cu b/cpp/benchmarks/groupby/group_nth.cpp
similarity index 100%
rename from cpp/benchmarks/groupby/group_nth.cu
rename to cpp/benchmarks/groupby/group_nth.cpp
diff --git a/cpp/benchmarks/groupby/group_rank_benchmark.cu b/cpp/benchmarks/groupby/group_rank.cpp
similarity index 100%
rename from cpp/benchmarks/groupby/group_rank_benchmark.cu
rename to cpp/benchmarks/groupby/group_rank.cpp
diff --git a/cpp/benchmarks/groupby/group_scan.cu b/cpp/benchmarks/groupby/group_scan.cpp
similarity index 100%
rename from cpp/benchmarks/groupby/group_scan.cu
rename to cpp/benchmarks/groupby/group_scan.cpp
diff --git a/cpp/benchmarks/groupby/group_shift.cu b/cpp/benchmarks/groupby/group_shift.cpp
similarity index 100%
rename from cpp/benchmarks/groupby/group_shift.cu
rename to cpp/benchmarks/groupby/group_shift.cpp
diff --git a/cpp/benchmarks/groupby/group_sum.cu b/cpp/benchmarks/groupby/group_sum.cpp
similarity index 100%
rename from cpp/benchmarks/groupby/group_sum.cu
rename to cpp/benchmarks/groupby/group_sum.cpp