diff --git a/libguile/gc.h b/libguile/gc.h
index b7fcbfd19..f0faa7b6d 100644
--- a/libguile/gc.h
+++ b/libguile/gc.h
@@ -93,5 +93,5 @@ extern SCM scm_unprotect_object PROTO ((SCM obj));
 extern int scm_init_storage PROTO ((long init_heap_size));
 extern void scm_init_gc PROTO ((void));
 
-#include "marksweep.h"
+#include "libguile/marksweep.h"
 #endif  /* GCH */
diff --git a/libguile/mbstrings.h b/libguile/mbstrings.h
index 3365847e5..21849fa85 100644
--- a/libguile/mbstrings.h
+++ b/libguile/mbstrings.h
@@ -45,7 +45,7 @@
 
 
 #include "libguile/__scm.h"
-#include "symbols.h"
+#include "libguile/symbols.h"
 
 
 #define SCM_MB_STRINGP(x) (   (SCM_TYP7(x)==scm_tc7_mb_string) \