diff --git a/libguile/debug.c b/libguile/debug.c
index 74087da6f..f5c9f8c55 100644
--- a/libguile/debug.c
+++ b/libguile/debug.c
@@ -59,6 +59,7 @@
 #include "read.h"
 #include "feature.h"
 #include "dynwind.h"
+#include "modules.h"
 
 #include "debug.h"
 
diff --git a/libguile/evalext.c b/libguile/evalext.c
index 330381eaa..b1224ce11 100644
--- a/libguile/evalext.c
+++ b/libguile/evalext.c
@@ -43,6 +43,7 @@
 #include "_scm.h"
 #include "eval.h"
 #include "macros.h"
+#include "modules.h"
 
 #include "evalext.h"
 
diff --git a/libguile/stacks.c b/libguile/stacks.c
index 0c624cadb..2a06097b0 100644
--- a/libguile/stacks.c
+++ b/libguile/stacks.c
@@ -52,6 +52,7 @@
 #include "struct.h"
 #include "macros.h"
 #include "procprop.h"
+#include "modules.h"
 
 #include "stacks.h"