diff --git a/stand/common/bootstrap.h b/stand/common/bootstrap.h
index 5d6a63db2b11..a570720b4250 100644
--- a/stand/common/bootstrap.h
+++ b/stand/common/bootstrap.h
@@ -45,7 +45,7 @@ extern char	command_errbuf[COMMAND_ERRBUFSZ];
 #define CMD_FATAL	4
 
 /* interp.c */
-void	interact(const char *rc);
+void	interact(void);
 int	include(const char *filename);
 
 /* interp_backslash.c */
@@ -55,7 +55,7 @@ char	*backslash(const char *str);
 int	parse(int *argc, char ***argv, const char *str);
 
 /* interp_forth.c */
-void	bf_init(const char *rc);
+void	bf_init(void);
 int	bf_run(char *line);
 
 /* boot.c */
diff --git a/stand/common/interp.c b/stand/common/interp.c
index 5cf4124660db..6b1b8bbf0db8 100644
--- a/stand/common/interp.c
+++ b/stand/common/interp.c
@@ -84,7 +84,7 @@ perform(int argc, char *argv[])
  * Interactive mode
  */
 void
-interact(const char *rc)
+interact(void)
 {
     static char	input[256];			/* big enough? */
 #ifndef BOOT_FORTH
@@ -93,14 +93,11 @@ interact(const char *rc)
 #endif
 
 #ifdef BOOT_FORTH
-    bf_init((rc) ? "" : NULL);
+    bf_init();
 #endif
 
-    if (rc == NULL) {
-	/* Read our default configuration. */
-	include("/boot/loader.rc");
-    } else if (*rc != '\0')
-	include(rc);
+    /* Read our default configuration. */
+    include("/boot/loader.rc");
 
     printf("\n");
 
diff --git a/stand/common/interp_forth.c b/stand/common/interp_forth.c
index a3b77769d38a..d617ce85842e 100644
--- a/stand/common/interp_forth.c
+++ b/stand/common/interp_forth.c
@@ -250,7 +250,7 @@ bf_command(FICL_VM *vm)
  * Initialise the Forth interpreter, create all our commands as words.
  */
 void
-bf_init(const char *rc)
+bf_init(void)
 {
     struct bootblk_command	**cmdp;
     char create_buf[41];	/* 31 characters-long builtins */
@@ -280,14 +280,9 @@ bf_init(const char *rc)
     ficlSetEnv(bf_sys, "loader_version", bootprog_rev);
 
     /* try to load and run init file if present */
-    if (rc == NULL)
-	rc = "/boot/boot.4th";
-    if (*rc != '\0') {
-	fd = open(rc, O_RDONLY);
-	if (fd != -1) {
-	    (void)ficlExecFD(bf_vm, fd);
-	    close(fd);
-	}
+    if ((fd = open("/boot/boot.4th", O_RDONLY)) != -1) {
+	(void)ficlExecFD(bf_vm, fd);
+	close(fd);
     }
 }
 
diff --git a/stand/efi/loader/main.c b/stand/efi/loader/main.c
index f367f292d387..516c47e37705 100644
--- a/stand/efi/loader/main.c
+++ b/stand/efi/loader/main.c
@@ -501,7 +501,7 @@ main(int argc, CHAR16 *argv[])
 #endif
 	}
 
-	interact(NULL);			/* doesn't return */
+	interact();			/* doesn't return */
 
 	return (EFI_SUCCESS);		/* keep compiler happy */
 }
diff --git a/stand/i386/loader/main.c b/stand/i386/loader/main.c
index 81bc2ff55dd0..543dae1af71a 100644
--- a/stand/i386/loader/main.c
+++ b/stand/i386/loader/main.c
@@ -232,7 +232,7 @@ main(void)
     
     bios_getsmap();
 
-    interact(NULL);
+    interact();
 
     /* if we ever get here, it is an error */
     return (1);
diff --git a/stand/mips/beri/loader/main.c b/stand/mips/beri/loader/main.c
index 2d201d8011ee..71b69b781572 100644
--- a/stand/mips/beri/loader/main.c
+++ b/stand/mips/beri/loader/main.c
@@ -149,7 +149,7 @@ main(int argc, char *argv[], char *envv[], struct bootinfo *bootinfop)
 	printf("bootpath=\"%s\"\n", bootpath);
 #endif
 
-	interact(NULL);
+	interact();
 	return (0);
 }
 
diff --git a/stand/ofw/common/main.c b/stand/ofw/common/main.c
index 3c0bbdf97a26..128542c922f3 100644
--- a/stand/ofw/common/main.c
+++ b/stand/ofw/common/main.c
@@ -157,7 +157,7 @@ main(int (*openfirm)(void *))
 	archsw.arch_readin = ofw_readin;
 	archsw.arch_autoload = ofw_autoload;
 
-	interact(NULL);				/* doesn't return */
+	interact();				/* doesn't return */
 
 	OF_exit();
 
diff --git a/stand/powerpc/kboot/main.c b/stand/powerpc/kboot/main.c
index 7a24c163d5c4..e72a7482046c 100644
--- a/stand/powerpc/kboot/main.c
+++ b/stand/powerpc/kboot/main.c
@@ -122,7 +122,7 @@ main(int argc, const char **argv)
 	setenv("loaddev", bootdev, 1);
 	setenv("LINES", "24", 1);
 
-	interact(NULL);			/* doesn't return */
+	interact();			/* doesn't return */
 
 	return (0);
 }
diff --git a/stand/powerpc/ps3/main.c b/stand/powerpc/ps3/main.c
index be8708aadefa..db9ea50959fa 100644
--- a/stand/powerpc/ps3/main.c
+++ b/stand/powerpc/ps3/main.c
@@ -140,7 +140,7 @@ main(void)
 	setenv("LINES", "24", 1);
 	setenv("hw.platform", "ps3", 1);
 
-	interact(NULL);			/* doesn't return */
+	interact();			/* doesn't return */
 
 	return (0);
 }
diff --git a/stand/sparc64/loader/main.c b/stand/sparc64/loader/main.c
index d3c17c5ea6cc..140885d50e8e 100644
--- a/stand/sparc64/loader/main.c
+++ b/stand/sparc64/loader/main.c
@@ -902,7 +902,7 @@ main(int (*openfirm)(void *))
 	printf("bootpath=\"%s\"\n", bootpath);
 
 	/* Give control to the machine independent loader code. */
-	interact(NULL);
+	interact();
 	return (1);
 }
 
diff --git a/stand/uboot/common/main.c b/stand/uboot/common/main.c
index c4efb1f69bd9..5540059797cc 100644
--- a/stand/uboot/common/main.c
+++ b/stand/uboot/common/main.c
@@ -500,7 +500,7 @@ main(int argc, char **argv)
 	archsw.arch_readin = uboot_readin;
 	archsw.arch_autoload = uboot_autoload;
 
-	interact(NULL);				/* doesn't return */
+	interact();				/* doesn't return */
 
 	return (0);
 }
diff --git a/stand/userboot/userboot/main.c b/stand/userboot/userboot/main.c
index 7f59eb7c3bdd..95bff1745a0f 100644
--- a/stand/userboot/userboot/main.c
+++ b/stand/userboot/userboot/main.c
@@ -142,7 +142,7 @@ loader_main(struct loader_callbacks *cb, void *arg, int version, int ndisks)
 	if (setjmp(jb))
 		return;
 
-	interact(NULL);			/* doesn't return */
+	interact();			/* doesn't return */
 
 	exit(0);
 }