diff --git a/libguile/debug.c b/libguile/debug.c
index ab085f40f..dd65de45c 100644
--- a/libguile/debug.c
+++ b/libguile/debug.c
@@ -59,6 +59,39 @@
 
 
 
+/*
+ * Debugging options.
+ */
+
+scm_t_option scm_debug_opts[] = {
+  { SCM_OPTION_BOOLEAN, "backwards", 0,
+    "Display backtrace in anti-chronological order." },
+  { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." },
+  { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." },
+  { SCM_OPTION_BOOLEAN, "backtrace", 1, "Show backtrace on error." },
+  /* This default stack limit will be overridden by init_stack_limit(),
+     if we have getrlimit() and the stack limit is not INFINITY. But it is still
+     important, as some systems have both the soft and the hard limits set to
+     INFINITY; in that case we fall back to this value.
+
+     The situation is aggravated by certain compilers, which can consume
+     "beaucoup de stack", as they say in France.
+
+     See http://thread.gmane.org/gmane.lisp.guile.devel/8599/focus=8662 for
+     more discussion. This setting is 640 KB on 32-bit arches (should be enough
+     for anyone!) or a whoppin' 1280 KB on 64-bit arches.
+  */
+  { SCM_OPTION_INTEGER, "stack", 160000, "Stack size limit (measured in words; 0 = no check)." },
+  { SCM_OPTION_SCM, "show-file-name", (unsigned long)SCM_BOOL_T,
+    "Show file names and line numbers "
+    "in backtraces when not `#f'.  A value of `base' "
+    "displays only base names, while `#t' displays full names."},
+  { SCM_OPTION_BOOLEAN, "warn-deprecated", 0,
+    "Warn when deprecated features are used." },
+  { 0 }, 
+};
+
+
 /* {Run time control of the debugging evaluator}
  */
 
diff --git a/libguile/eval.c b/libguile/eval.c
index 21cb5508b..293612ed8 100644
--- a/libguile/eval.c
+++ b/libguile/eval.c
@@ -435,35 +435,6 @@ eval (SCM x, SCM env)
     }
 }
 
-scm_t_option scm_debug_opts[] = {
-  { SCM_OPTION_BOOLEAN, "backwards", 0,
-    "Display backtrace in anti-chronological order." },
-  { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." },
-  { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." },
-  { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." },
-  /* This default stack limit will be overridden by debug.c:init_stack_limit(),
-     if we have getrlimit() and the stack limit is not INFINITY. But it is still
-     important, as some systems have both the soft and the hard limits set to
-     INFINITY; in that case we fall back to this value.
-
-     The situation is aggravated by certain compilers, which can consume
-     "beaucoup de stack", as they say in France.
-
-     See http://thread.gmane.org/gmane.lisp.guile.devel/8599/focus=8662 for
-     more discussion. This setting is 640 KB on 32-bit arches (should be enough
-     for anyone!) or a whoppin' 1280 KB on 64-bit arches.
-  */
-  { SCM_OPTION_INTEGER, "stack", 160000, "Stack size limit (measured in words; 0 = no check)." },
-  { SCM_OPTION_SCM, "show-file-name", (unsigned long)SCM_BOOL_T,
-    "Show file names and line numbers "
-    "in backtraces when not `#f'.  A value of `base' "
-    "displays only base names, while `#t' displays full names."},
-  { SCM_OPTION_BOOLEAN, "warn-deprecated", 0,
-    "Warn when deprecated features are used." },
-  { 0 }, 
-};
-
-
 
 
 /* Simple procedure calls
diff --git a/libguile/private-options.h b/libguile/private-options.h
index 543c4dad0..2c27214ea 100644
--- a/libguile/private-options.h
+++ b/libguile/private-options.h
@@ -28,7 +28,7 @@
 /*
   debugging.
  */
-SCM_API scm_t_option scm_debug_opts[];
+SCM_INTERNAL scm_t_option scm_debug_opts[];
 
 #define SCM_BACKWARDS_P		scm_debug_opts[0].val
 #define SCM_BACKTRACE_WIDTH   	scm_debug_opts[1].val
@@ -43,7 +43,7 @@ SCM_API scm_t_option scm_debug_opts[];
 /*
   printing
 */
-SCM_API scm_t_option scm_print_opts[];
+SCM_INTERNAL scm_t_option scm_print_opts[];
 
 #define SCM_PRINT_HIGHLIGHT_PREFIX  (SCM_PACK (scm_print_opts[0].val))
 #define SCM_PRINT_HIGHLIGHT_SUFFIX  (SCM_PACK (scm_print_opts[1].val))
@@ -55,7 +55,7 @@ SCM_API scm_t_option scm_print_opts[];
 /*
   read
  */
-SCM_API scm_t_option scm_read_opts[];
+SCM_INTERNAL scm_t_option scm_read_opts[];
 
 #define SCM_COPY_SOURCE_P      scm_read_opts[0].val
 #define SCM_RECORD_POSITIONS_P scm_read_opts[1].val