diff --git a/man/openrc-run.8 b/man/openrc-run.8
index 0c977f963..652ca1de8 100644
--- a/man/openrc-run.8
+++ b/man/openrc-run.8
@@ -563,7 +563,7 @@ A special variable to describe the system more.
 Possible values are OPENVZ, XENU, XEN0, UML and VSERVER.
 .It Va RC_PREFIX
 In a Gentoo Prefix installation, this variable contains the prefix
-offset. Otherwise it is undefined.
+offset. Otherwise it is empty string.
 .It Va RC_UNAME
 The result of `uname -s`.
 .It Va RC_CMD
diff --git a/src/shared/misc.c b/src/shared/misc.c
index 28f4e2352..b55e41e0d 100644
--- a/src/shared/misc.c
+++ b/src/shared/misc.c
@@ -197,9 +197,7 @@ env_config(void)
 	if (sys)
 		setenv("RC_SYS", sys, 1);
 
-#ifdef PREFIX
 	setenv("RC_PREFIX", RC_PREFIX, 1);
-#endif
 
 	/* Some scripts may need to take a different code path if
 	   Linux/FreeBSD, etc