diff --git a/README b/README
new file mode 100644
index 0000000..e69de29
diff --git a/Xcoin.c b/Xcoin.c
index 72be795..cb4050b 100644
--- a/Xcoin.c
+++ b/Xcoin.c
@@ -33,7 +33,7 @@ typedef struct {
 	sph_echo512_context		echo1;
 } Xhash_context_holder;
 
-Xhash_context_holder base_contexts;
+static Xhash_context_holder base_contexts;
 
 void init_Xhash_contexts()
 {
diff --git a/quark.c b/quark.c
index 01d8044..270a8cb 100644
--- a/quark.c
+++ b/quark.c
@@ -22,7 +22,7 @@ typedef struct {
 	sph_keccak512_context	keccak1, keccak2;
 } quarkhash_context_holder;
 
-quarkhash_context_holder base_contexts;
+static quarkhash_context_holder base_contexts;
 
 void init_quarkhash_contexts()
 {
@@ -249,4 +249,4 @@ int scanhash_quark(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
 	*hashes_done = n - first_nonce + 1;
 	pdata[19] = n;
 	return 0;
-}
\ No newline at end of file
+}