diff --git a/grpc.changes b/grpc.changes
index 5d140ac..75816b7 100644
--- a/grpc.changes
+++ b/grpc.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Aug 30 17:52:56 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
+
+- Remove cmake's build .log from grpc-source to make
+  build-compare happier.
+
 -------------------------------------------------------------------
 Wed Jul 28 11:09:10 UTC 2021 - Atri Bhattacharya <badshah400@gmail.com>
 
diff --git a/grpc.spec b/grpc.spec
index 35d4393..74eca43 100644
--- a/grpc.spec
+++ b/grpc.spec
@@ -159,9 +159,10 @@ popd
 
 # Install sources
 pushd %__builddir
+rm -fv CMakeFiles/*.log
 make clean
-rm -f "b"
-find . -type f "(" -name "*.so" -o -name "*.o" -o -name ".git*" -o -name "*.bin" -o -name "*.out" ")" -exec rm -rf {} +
+find . -type f "(" -name "*.so" -o -name "*.o" -o -name ".git*" -o \
+	-name "*.bin" -o -name "*.out" ")" -exec rm -Rfv {} +
 popd
 # Don't include abseil-cpp in sources
 rm -fr third_party/abseil-cpp/*