diff --git a/src/lib/asiolink/tests/Makefile.am b/src/lib/asiolink/tests/Makefile.am
index db32572bb4..78ff376ad4 100644
--- a/src/lib/asiolink/tests/Makefile.am
+++ b/src/lib/asiolink/tests/Makefile.am
@@ -1,6 +1,7 @@
 AM_CPPFLAGS = -I$(top_srcdir)/src/lib -I$(top_builddir)/src/lib
 AM_CPPFLAGS += $(BOOST_INCLUDES) $(CRYPTO_CFLAGS) $(CRYPTO_INCLUDES)
 AM_CPPFLAGS += -DTEST_SCRIPT_SH=\"$(abs_top_builddir)/src/lib/asiolink/tests/process_spawn_app.sh\"
+AM_CPPFLAGS += -DTEST_SCRIPT_SH_IN=\"$(abs_top_srcdir)/src/lib/asiolink/tests/process_spawn_app.sh.in\"
 TEST_CA_DIR = $(abs_srcdir)/../testutils/ca
 AM_CPPFLAGS += -DTEST_CA_DIR=\"$(TEST_CA_DIR)\"
 
diff --git a/src/lib/asiolink/tests/process_spawn_unittest.cc b/src/lib/asiolink/tests/process_spawn_unittest.cc
index 6abeb95b02..1a2a9bcb57 100644
--- a/src/lib/asiolink/tests/process_spawn_unittest.cc
+++ b/src/lib/asiolink/tests/process_spawn_unittest.cc
@@ -265,8 +265,7 @@ TEST_F(ProcessSpawnTest, invalidExecutable) {
     ASSERT_THROW_MSG(ProcessSpawn process(io_service_, "foo"),
                      ProcessSpawnError, expected);
 
-    std::string name = TEST_SCRIPT_SH;
-    name += ".in";
+    std::string name = TEST_SCRIPT_SH_IN;
 
     expected = "File not executable: ";
     expected += name;