diff --git a/common/env_nvram.c b/common/env_nvram.c
index bfc8d02..7c18896 100644
--- a/common/env_nvram.c
+++ b/common/env_nvram.c
@@ -63,6 +63,7 @@
 extern uchar default_environment[];
 extern int default_environment_size;
 
+extern uchar (*env_get_char)(int);
 extern uchar env_get_char_memory (int index);
 
 #ifdef CONFIG_AMIGAONEG3SE