diff --git a/brp-python-bytecompile b/brp-python-bytecompile
index 1f7c4cd..b1e5db5 100644
--- a/brp-python-bytecompile
+++ b/brp-python-bytecompile
@@ -14,7 +14,7 @@ fi
 compileall_flags="$4"
 
 # If using normal root, avoid changing anything.
-if [ -z "$RPM_BUILD_ROOT" -o "$RPM_BUILD_ROOT" = "/" ]; then
+if [ -z "$RPM_BUILD_ROOT" ] || [ "$RPM_BUILD_ROOT" = "/" ]; then
 	exit 0
 fi
 
@@ -137,12 +137,12 @@ do
 
 	# Generate normal (.pyc) byte-compiled files.
 	python_clamp_source_mtime "" "$python_binary" "" "$python_libdir" ""
-	if [ $? -ne 0 -a 0$errors_terminate -ne 0 ]; then
+	if [ $? -ne 0 ] && [ 0$errors_terminate -ne 0 ]; then
 		# One or more of the files had inaccessible mtime
 		exit 1
 	fi
 	python_bytecompile "" "$python_binary" "" "$python_libdir" "$compileall_flags"
-	if [ $? -ne 0 -a 0$errors_terminate -ne 0 ]; then
+	if [ $? -ne 0 ] && [ 0$errors_terminate -ne 0 ]; then
 		# One or more of the files had a syntax error
 		exit 1
 	fi
@@ -150,7 +150,7 @@ do
 	# Generate optimized (.pyo) byte-compiled files.
 	# N.B. For Python 3.4+, this call does nothing
 	python_bytecompile "-O" "$python_binary" "" "$python_libdir" "$compileall_flags"
-	if [ $? -ne 0 -a 0$errors_terminate -ne 0 ]; then
+	if [ $? -ne 0 ] && [ 0$errors_terminate -ne 0 ]; then
 		# One or more of the files had a syntax error
 		exit 1
 	fi