diff --git a/Makefile.am b/Makefile.am
index 859b35d..1ac3914 100755
--- a/Makefile.am
+++ b/Makefile.am
@@ -5,6 +5,7 @@
 	download_manager.hpp \
 	watch.hpp \
 	version.hpp \
+	images.hpp \
 	image_manager.hpp \
 	item_updater.hpp \
 	activation.hpp
diff --git a/activation.cpp b/activation.cpp
index 421902a..863ea56 100644
--- a/activation.cpp
+++ b/activation.cpp
@@ -1,4 +1,5 @@
 #include "activation.hpp"
+#include "images.hpp"
 #include "item_updater.hpp"
 #include "serialize.hpp"
 #include <phosphor-logging/log.hpp>
diff --git a/activation.hpp b/activation.hpp
index 7f0120f..654d21f 100644
--- a/activation.hpp
+++ b/activation.hpp
@@ -199,7 +199,7 @@
  *  @details A concrete implementation for
  *  xyz.openbmc_project.Software.Activation DBus API.
  */
-class Activation : public ActivationInherit, Flash
+class Activation : public ActivationInherit, public Flash
 {
   public:
     /** @brief Constructs Activation Software Manager
diff --git a/image_verify.cpp b/image_verify.cpp
index 7d59910..7ca2629 100644
--- a/image_verify.cpp
+++ b/image_verify.cpp
@@ -4,6 +4,7 @@
 #include <fcntl.h>
 #include <openssl/err.h>
 
+#include "images.hpp"
 #include "image_verify.hpp"
 #include "config.h"
 #include "version.hpp"
diff --git a/image_verify.hpp b/image_verify.hpp
index 3c9c2a4..98fda6f 100644
--- a/image_verify.hpp
+++ b/image_verify.hpp
@@ -28,14 +28,6 @@
 using EVP_MD_CTX_Ptr =
     std::unique_ptr<EVP_MD_CTX, decltype(&::EVP_MD_CTX_destroy)>;
 
-// BMC flash image file name list.
-#ifdef UBIFS_LAYOUT
-const std::vector<std::string> bmcImages = {"image-kernel", "image-rofs",
-                                            "image-rwfs", "image-u-boot"};
-#else
-const std::vector<std::string> bmcImages = {"image-bmc"};
-#endif
-
 /** @struct CustomFd
  *
  *  RAII wrapper for file descriptor.
diff --git a/images.hpp b/images.hpp
new file mode 100644
index 0000000..c82725f
--- /dev/null
+++ b/images.hpp
@@ -0,0 +1,23 @@
+#include <string>
+#include <vector>
+
+#include "config.h"
+
+namespace phosphor
+{
+namespace software
+{
+namespace image
+{
+
+// BMC flash image file name list.
+#ifdef UBIFS_LAYOUT
+const std::vector<std::string> bmcImages = {"image-kernel", "image-rofs",
+                                            "image-rwfs", "image-u-boot"};
+#else
+const std::vector<std::string> bmcImages = {"image-bmc"};
+#endif
+
+} // namespace image
+} // namespace software
+} // namespace phosphor
diff --git a/item_updater.cpp b/item_updater.cpp
index 03bc591..51523d4 100644
--- a/item_updater.cpp
+++ b/item_updater.cpp
@@ -12,7 +12,7 @@
 #include <experimental/filesystem>
 #include "version.hpp"
 #include "serialize.hpp"
-#include "image_verify.hpp"
+#include "images.hpp"
 
 namespace phosphor
 {
diff --git a/static/flash.cpp b/static/flash.cpp
index 59c7a67..3ca7bfc 100644
--- a/static/flash.cpp
+++ b/static/flash.cpp
@@ -3,7 +3,7 @@
 #include "activation.hpp"
 #include "config.h"
 #include "flash.hpp"
-#include "image_verify.hpp" // For bmcImages
+#include "images.hpp"
 
 namespace
 {
diff --git a/test/Makefile.am b/test/Makefile.am
index 0c59399..f0a94c6 100755
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -9,7 +9,8 @@
 # Build/add utest to test suite
 utest_CPPFLAGS = -Igtest $(GTEST_CPPFLAGS) $(AM_CPPFLAGS)
 utest_CXXFLAGS = $(PTHREAD_CFLAGS) $(PHOSPHOR_LOGGING_CFLAGS) \
-	$(PHOSPHOR_DBUS_INTERFACES_CFLAGS)
+	$(PHOSPHOR_DBUS_INTERFACES_CFLAGS) \
+	-DUBIFS_LAYOUT
 utest_LDFLAGS = -lgtest_main -lgtest $(PTHREAD_LIBS) \
 	$(PHOSPHOR_DBUS_INTERFACES_LIBS) $(OESDK_TESTCASE_FLAGS) \
 	$(PHOSPHOR_LOGGING_LIBS) -lstdc++fs -lssl -lcrypto