diff --git a/src/globals.c b/src/globals.c
index c2fbd4f02e..771eb6758b 100644
--- a/src/globals.c
+++ b/src/globals.c
@@ -37,3 +37,5 @@ int PAGE_SHIFT;
 
 /* whether to check all dGPUs in the topology support SVM API */
 bool is_svm_api_supported;
+/* zfb is mainly used during emulation */
+int zfb_support;
diff --git a/src/libhsakmt.h b/src/libhsakmt.h
index 656800dae6..62f65d01a4 100644
--- a/src/libhsakmt.h
+++ b/src/libhsakmt.h
@@ -38,6 +38,7 @@ extern bool hsakmt_forked;
 extern pthread_mutex_t hsakmt_mutex;
 extern bool is_dgpu;
 extern bool is_svm_api_supported;
+extern int zfb_support;
 
 extern HsaVersionInfo kfd_version_info;
 
diff --git a/src/memory.c b/src/memory.c
index b95fb1b303..5eeaa9fecc 100644
--- a/src/memory.c
+++ b/src/memory.c
@@ -34,8 +34,6 @@
 #include <fcntl.h>
 #include "fmm.h"
 
-extern int zfb_support;
-
 HSAKMT_STATUS HSAKMTAPI hsaKmtSetMemoryPolicy(HSAuint32 Node,
 					      HSAuint32 DefaultPolicy,
 					      HSAuint32 AlternatePolicy,
diff --git a/src/openclose.c b/src/openclose.c
index bc513c6a03..0e5c10c065 100644
--- a/src/openclose.c
+++ b/src/openclose.c
@@ -49,9 +49,6 @@ static pid_t parent_pid = -1;
 int hsakmt_debug_level;
 bool hsakmt_forked;
 
-/* zfb is mainly used during emulation */
-int zfb_support;
-
 /* is_forked_child detects when the process has forked since the last
  * time this function was called. We cannot rely on pthread_atfork
  * because the process can fork without calling the fork function in