diff --git a/libguile/deprecated.c b/libguile/deprecated.c
index 1fa9558a1..7b629b9be 100644
--- a/libguile/deprecated.c
+++ b/libguile/deprecated.c
@@ -25,7 +25,7 @@
 #include "libguile/snarf.h"
 #include "libguile/validate.h"
 #include "libguile/strings.h"
-#include "libguile/strop.h"
+#include "libguile/srfi-13.h"
 #include "libguile/modules.h"
 #include "libguile/eval.h"
 #include "libguile/smob.h"
diff --git a/libguile/load.c b/libguile/load.c
index 345f309c8..337426921 100644
--- a/libguile/load.c
+++ b/libguile/load.c
@@ -38,7 +38,7 @@
 #include "libguile/modules.h"
 #include "libguile/lang.h"
 #include "libguile/chars.h"
-#include "libguile/strop.h"
+#include "libguile/srfi-13.h"
 
 #include "libguile/validate.h"
 #include "libguile/load.h"
diff --git a/libguile/posix.c b/libguile/posix.c
index df743f355..e725e8452 100644
--- a/libguile/posix.c
+++ b/libguile/posix.c
@@ -33,9 +33,9 @@
 #include "libguile/scmsigs.h"
 #include "libguile/feature.h"
 #include "libguile/strings.h"
+#include "libguile/srfi-13.h"
 #include "libguile/vectors.h"
 #include "libguile/lang.h"
-#include "libguile/strop.h"
 
 #include "libguile/validate.h"
 #include "libguile/posix.h"
diff --git a/libguile/unif.c b/libguile/unif.c
index cc9e6ee04..8c4d55089 100644
--- a/libguile/unif.c
+++ b/libguile/unif.c
@@ -38,10 +38,10 @@
 #include "libguile/eval.h"
 #include "libguile/fports.h"
 #include "libguile/smob.h"
-#include "libguile/strop.h"
 #include "libguile/feature.h"
 #include "libguile/root.h"
 #include "libguile/strings.h"
+#include "libguile/srfi-13.h"
 #include "libguile/vectors.h"
 
 #include "libguile/validate.h"