diff --git a/tests/lib1/cflags-whitespace-trailing.pc b/tests/lib1/cflags-whitespace-trailing.pc
new file mode 100644
index 0000000..2e66035
--- /dev/null
+++ b/tests/lib1/cflags-whitespace-trailing.pc
@@ -0,0 +1,4 @@
+Name: CFlags Trailing Whitespace Bug
+Description: Demonstrates problems with -I with spaces
+Version: 1
+Cflags: -I/usr/include  -I/usr/include/foo
diff --git a/tests/run.sh.in b/tests/run.sh.in
index 79e9f6c..4af05c7 100644
--- a/tests/run.sh.in
+++ b/tests/run.sh.in
@@ -291,6 +291,8 @@ run_test "PKG_CONFIG_PATH='${selfdir}/lib1' PKG_CONFIG_SYSROOT_DIR='/test' ${1}
 
 run_test "PKG_CONFIG_PATH='${selfdir}/lib1' PKG_CONFIG_SYSROOT_DIR='/test' ${1} --cflags cflags-whitespace" \
 	"-I /test/opt/bad/include"
+run_test "PKG_CONFIG_PATH='${selfdir}/lib1' PKG_CONFIG_SYSTEM_INCLUDE_PATH='/usr/include' ${1} --cflags cflags-whitespace-trailing" \
+	"-I/usr/include/foo"
 
 # 10) tests for Provides system
 run_test "PKG_CONFIG_PATH='${selfdir}/lib1' ${1} --print-provides provides" \