diff --git a/src/gallium/auxiliary/util/u_debug_stack.c b/src/gallium/auxiliary/util/u_debug_stack.c
index e16123b..a1e7b27 100644
--- a/src/gallium/auxiliary/util/u_debug_stack.c
+++ b/src/gallium/auxiliary/util/u_debug_stack.c
@@ -47,7 +47,7 @@
 #include "os/os_thread.h"
 #include "u_hash_table.h"
 
-struct hash_table* symbols_hash;
+static struct hash_table* symbols_hash;
 static mtx_t symbols_mutex = _MTX_INITIALIZER_NP;
 
 /* TODO with some refactoring we might be able to re-use debug_symbol_name_cached()
diff --git a/src/gallium/auxiliary/util/u_debug_symbol.c b/src/gallium/auxiliary/util/u_debug_symbol.c
index 4bbed58..d647192 100644
--- a/src/gallium/auxiliary/util/u_debug_symbol.c
+++ b/src/gallium/auxiliary/util/u_debug_symbol.c
@@ -270,7 +270,7 @@
    debug_printf("\t%s\n", buf);
 }
 
-struct hash_table* symbols_hash;
+static struct hash_table* symbols_hash;
 #ifdef PIPE_OS_WINDOWS
 static mtx_t symbols_mutex;
 #else