diff --git a/README.md b/README.md
index 6d94028..8647c1f 100644
--- a/README.md
+++ b/README.md
@@ -26,5 +26,5 @@ EOF
 3. Compile together:
 
 ```bash
-g++ --std=c++14 -I gtest-<version> main.cpp gtest-<version>/gtest-all.cpp
+g++ --std=c++14 -I gtest-<version> main.cpp gtest-<version>/gtest-all.cc
 ```
\ No newline at end of file
diff --git a/_generated/gtest-1.12.0/gtest/gtest-all.cpp b/_generated/gtest-1.12.0/gtest/gtest-all.cc
similarity index 100%
rename from _generated/gtest-1.12.0/gtest/gtest-all.cpp
rename to _generated/gtest-1.12.0/gtest/gtest-all.cc
diff --git a/_generated/gtest-1.13.0/gtest/gtest-all.cpp b/_generated/gtest-1.13.0/gtest/gtest-all.cc
similarity index 100%
rename from _generated/gtest-1.13.0/gtest/gtest-all.cpp
rename to _generated/gtest-1.13.0/gtest/gtest-all.cc
diff --git a/_generated/gtest-1.14.0/gtest/gtest-all.cpp b/_generated/gtest-1.14.0/gtest/gtest-all.cc
similarity index 100%
rename from _generated/gtest-1.14.0/gtest/gtest-all.cpp
rename to _generated/gtest-1.14.0/gtest/gtest-all.cc
diff --git a/_generated/gtest-1.15.2/gtest/gtest-all.cpp b/_generated/gtest-1.15.2/gtest/gtest-all.cc
similarity index 100%
rename from _generated/gtest-1.15.2/gtest/gtest-all.cpp
rename to _generated/gtest-1.15.2/gtest/gtest-all.cc
diff --git a/generate.sh b/generate.sh
index cdf1427..5823091 100755
--- a/generate.sh
+++ b/generate.sh
@@ -20,7 +20,7 @@ for version in "${VERSIONS[@]}"; do
     # created fused source
     python -m fuse \
       googletest-${version}/googletest/src/gtest-all.cc \
-      ${OUT_DIR}/gtest/gtest-all.cpp \
+      ${OUT_DIR}/gtest/gtest-all.cc \
       googletest-${version}/googletest googletest-${version}/googletest/include
 
     # create fused header
@@ -30,7 +30,7 @@ for version in "${VERSIONS[@]}"; do
       googletest-${version}/googletest googletest-${version}/googletest/include
 
     # test compilation
-    g++ --std=c++14 -I ${OUT_DIR} googletest-${version}/googletest/src/gtest_main.cc ${OUT_DIR}/gtest/gtest-all.cpp
+    g++ --std=c++14 -I ${OUT_DIR} googletest-${version}/googletest/src/gtest_main.cc ${OUT_DIR}/gtest/gtest-all.cc
     ./a.out
 
     # Include license file