diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index 465eba47cc9..dbc55827a32 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -344,12 +344,12 @@ add_library(
   src/join/join.cu
   src/join/join_utils.cu
   src/join/mixed_join.cu
-  src/join/mixed_join_kernels.cu
-  src/join/mixed_join_kernels_nulls.cu
+  src/join/mixed_join_kernel.cu
+  src/join/mixed_join_kernel_nulls.cu
   src/join/mixed_join_kernels_semi.cu
   src/join/mixed_join_semi.cu
-  src/join/mixed_join_size_kernels.cu
-  src/join/mixed_join_size_kernels_nulls.cu
+  src/join/mixed_join_size_kernel.cu
+  src/join/mixed_join_size_kernel_nulls.cu
   src/join/mixed_join_size_kernels_semi.cu
   src/join/semi_join.cu
   src/lists/contains.cu
diff --git a/cpp/src/join/mixed_join_kernels.cu b/cpp/src/join/mixed_join_kernel.cu
similarity index 100%
rename from cpp/src/join/mixed_join_kernels.cu
rename to cpp/src/join/mixed_join_kernel.cu
diff --git a/cpp/src/join/mixed_join_kernels_nulls.cu b/cpp/src/join/mixed_join_kernel_nulls.cu
similarity index 100%
rename from cpp/src/join/mixed_join_kernels_nulls.cu
rename to cpp/src/join/mixed_join_kernel_nulls.cu
diff --git a/cpp/src/join/mixed_join_size_kernels.cu b/cpp/src/join/mixed_join_size_kernel.cu
similarity index 100%
rename from cpp/src/join/mixed_join_size_kernels.cu
rename to cpp/src/join/mixed_join_size_kernel.cu
diff --git a/cpp/src/join/mixed_join_size_kernels_nulls.cu b/cpp/src/join/mixed_join_size_kernel_nulls.cu
similarity index 100%
rename from cpp/src/join/mixed_join_size_kernels_nulls.cu
rename to cpp/src/join/mixed_join_size_kernel_nulls.cu