diff --git a/include/sigar_private.h b/include/sigar_private.h
index 64841262..d41d9eda 100644
--- a/include/sigar_private.h
+++ b/include/sigar_private.h
@@ -70,6 +70,7 @@
    char *ifconf_buf; \
    int ifconf_len; \
    char *self_path; \
+   sigar_cache_t *fsdev; \
    sigar_cache_t *proc_cpu; \
    sigar_cache_t *net_listen; \
    sigar_cache_t *net_services_tcp; \
diff --git a/src/os/hpux/hpux_sigar.c b/src/os/hpux/hpux_sigar.c
index 9d500366..6c89afd2 100644
--- a/src/os/hpux/hpux_sigar.c
+++ b/src/os/hpux/hpux_sigar.c
@@ -49,8 +49,6 @@ int sigar_os_open(sigar_t **sigar)
 
     (*sigar)->pinfo = NULL;
 
-    (*sigar)->fsdev = NULL;
-
     (*sigar)->mib = -1;
     
     return SIGAR_OK;
@@ -62,9 +60,6 @@ int sigar_os_close(sigar_t *sigar)
     if (sigar->pinfo) {
         free(sigar->pinfo);
     }
-    if (sigar->fsdev) {
-        sigar_cache_destroy(sigar->fsdev);
-    }
     if (sigar->mib >= 0) {
         close_mib(sigar->mib);
     } 
diff --git a/src/os/hpux/sigar_os.h b/src/os/hpux/sigar_os.h
index 6b0534ab..2e6339af 100644
--- a/src/os/hpux/sigar_os.h
+++ b/src/os/hpux/sigar_os.h
@@ -43,7 +43,6 @@ struct sigar_t {
     sigar_pid_t last_pid;
     struct pst_status *pinfo;
 
-    sigar_cache_t *fsdev;
     int mib;
 };
 
diff --git a/src/os/linux/linux_sigar.c b/src/os/linux/linux_sigar.c
index f6ed4fa6..2aefe976 100644
--- a/src/os/linux/linux_sigar.c
+++ b/src/os/linux/linux_sigar.c
@@ -168,8 +168,6 @@ int sigar_os_open(sigar_t **sigar)
         (*sigar)->iostat = IOSTAT_NONE;
     }
 
-    (*sigar)->fsdev = NULL;
-
     /* hook for using mirrored /proc/net/tcp file */
     (*sigar)->proc_net = getenv("SIGAR_PROC_NET");
 
@@ -178,9 +176,6 @@ int sigar_os_open(sigar_t **sigar)
 
 int sigar_os_close(sigar_t *sigar)
 {
-    if (sigar->fsdev) {
-        sigar_cache_destroy(sigar->fsdev);
-    }
     free(sigar);
     return SIGAR_OK;
 }
diff --git a/src/os/linux/sigar_os.h b/src/os/linux/sigar_os.h
index 031f78e4..4e8e5998 100644
--- a/src/os/linux/sigar_os.h
+++ b/src/os/linux/sigar_os.h
@@ -67,7 +67,6 @@ struct sigar_t {
     int ht_enabled;
     int lcpu;
     linux_iostat_e iostat;
-    sigar_cache_t *fsdev;
     char *proc_net;
 };
 
diff --git a/src/os/solaris/sigar_os.h b/src/os/solaris/sigar_os.h
index 92a1c259..fdaa411e 100644
--- a/src/os/solaris/sigar_os.h
+++ b/src/os/solaris/sigar_os.h
@@ -255,7 +255,6 @@ struct sigar_t {
     proc_dirname_func_t pdirname;
     proc_exename_func_t pexename;
 
-    sigar_cache_t *fsdev;
     sigar_cache_t *pargs;
 
     solaris_mib2_t mib2;
diff --git a/src/os/solaris/solaris_sigar.c b/src/os/solaris/solaris_sigar.c
index cd54c6e6..f937895b 100644
--- a/src/os/solaris/solaris_sigar.c
+++ b/src/os/solaris/solaris_sigar.c
@@ -115,7 +115,6 @@ int sigar_os_open(sigar_t **sig)
     sigar->pfree = NULL;
     sigar->pobjname = NULL;
 
-    sigar->fsdev = NULL;
     sigar->pargs = NULL;
 
     SIGAR_ZERO(&sigar->mib2);
@@ -144,9 +143,6 @@ int sigar_os_close(sigar_t *sigar)
     if (sigar->plib) {
         dlclose(sigar->plib);
     }
-    if (sigar->fsdev) {
-        sigar_cache_destroy(sigar->fsdev);
-    }
     if (sigar->pargs) {
         sigar_cache_destroy(sigar->pargs);
     }
diff --git a/src/sigar.c b/src/sigar.c
index 82fa63b1..c2777a15 100644
--- a/src/sigar.c
+++ b/src/sigar.c
@@ -48,6 +48,7 @@ SIGAR_DECLARE(int) sigar_open(sigar_t **sigar)
         (*sigar)->ptql_re_impl = NULL;
         (*sigar)->ptql_re_data = NULL;
         (*sigar)->self_path = NULL;
+        (*sigar)->fsdev = NULL;
         (*sigar)->proc_cpu = NULL;
         (*sigar)->net_listen = NULL;
         (*sigar)->net_services_tcp = NULL;
@@ -65,6 +66,9 @@ SIGAR_DECLARE(int) sigar_close(sigar_t *sigar)
     if (sigar->self_path) {
         free(sigar->self_path);
     }
+    if (sigar->fsdev) {
+        sigar_cache_destroy(sigar->fsdev);
+    }
     if (sigar->proc_cpu) {
         sigar_cache_destroy(sigar->proc_cpu);
     }