diff --git a/src/common.c b/src/common.c
index d29fbd3..0451de2 100644
--- a/src/common.c
+++ b/src/common.c
@@ -87,6 +87,19 @@ void reg_close(HKEY key)
 	}
 }
 
+/* Check if a value exists.
+ * Returns true on success, false on failure.
+*/
+bool reg_check_value(HKEY key, const char *name)
+{
+	if(key != NULL && RegQueryValueEx(key, name, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)
+	{
+		return true;
+	}
+	
+	return false;
+}
+
 bool reg_get_bin(HKEY key, const char *name, void *buf, size_t size, const void *default_value)
 {
 	if(key != NULL)
diff --git a/src/common.h b/src/common.h
index 85cfef8..f047414 100644
--- a/src/common.h
+++ b/src/common.h
@@ -45,6 +45,8 @@ HKEY reg_open_main(bool readwrite);
 HKEY reg_open_subkey(HKEY parent, const char *path, bool readwrite);
 void reg_close(HKEY key);
 
+bool reg_check_value(HKEY key, const char *name);
+
 bool reg_get_bin(HKEY key, const char *name, void *buf, size_t size, const void *default_value);
 bool reg_set_bin(HKEY key, const char *name, void *buf, size_t size);