diff --git a/backend/hp-accessor.c b/backend/hp-accessor.c
index fac87c29c..d0eb9fb54 100644
--- a/backend/hp-accessor.c
+++ b/backend/hp-accessor.c
@@ -48,7 +48,7 @@ extern int sanei_debug_hp; */
 
 #include "sane/config.h"
 
-#include "../include/assert.h"
+#include "../include/lassert.h"
 #include <string.h>
 
 #include <sys/types.h>
diff --git a/backend/hp-device.c b/backend/hp-device.c
index b67af8dda..f1f612030 100644
--- a/backend/hp-device.c
+++ b/backend/hp-device.c
@@ -49,7 +49,7 @@ extern int sanei_debug_hp;*/
 
 #include <stdlib.h>
 #include <string.h>
-#include "../include/assert.h"
+#include "../include/lassert.h"
 #include "hp-device.h"
 #include "hp-accessor.h"
 #include "hp-option.h"
diff --git a/backend/hp-handle.c b/backend/hp-handle.c
index aa1617a05..cc6a2b211 100644
--- a/backend/hp-handle.c
+++ b/backend/hp-handle.c
@@ -52,7 +52,7 @@ extern int sanei_debug_hp; */
 #endif
 #include <string.h>
 #include <signal.h>
-#include "../include/assert.h"
+#include "../include/lassert.h"
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/wait.h>
diff --git a/backend/hp-hpmem.c b/backend/hp-hpmem.c
index c4cbcf25f..3d585125e 100644
--- a/backend/hp-hpmem.c
+++ b/backend/hp-hpmem.c
@@ -49,7 +49,7 @@ extern int sanei_debug_hp;*/
 
 #include <stdlib.h>
 #include <string.h>
-#include "../include/assert.h"
+#include "../include/lassert.h"
 
 #include "hp.h"
 
diff --git a/backend/hp-option.c b/backend/hp-option.c
index 0ccbb8019..23026cce5 100644
--- a/backend/hp-option.c
+++ b/backend/hp-option.c
@@ -62,7 +62,7 @@ extern int sanei_debug_hp; */
 
 #include <stdio.h>
 #include <string.h>
-#include "../include/assert.h"
+#include "../include/lassert.h"
 #ifndef SANE_HOME_HP
 #include <pwd.h>
 #endif
diff --git a/backend/hp-scl.c b/backend/hp-scl.c
index b92ec8b3e..accfaa3ad 100644
--- a/backend/hp-scl.c
+++ b/backend/hp-scl.c
@@ -56,7 +56,7 @@ extern int sanei_debug_hp;*/
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
-#include "../include/assert.h"
+#include "../include/lassert.h"
 #include <signal.h>
 #include <sys/types.h>
 #include <sys/stat.h>