diff --git a/config.tests/unix/ipc_posix/ipc.cpp b/config.tests/unix/ipc_posix/ipc.cpp
index e2d2d1dc736..2d9d9bbc3c1 100644
--- a/config.tests/unix/ipc_posix/ipc.cpp
+++ b/config.tests/unix/ipc_posix/ipc.cpp
@@ -32,7 +32,6 @@
 ****************************************************************************/
 
 #include <sys/types.h>
-#include <sys/ipc.h>
 #include <sys/mman.h>
 #include <semaphore.h>
 #include <fcntl.h>
diff --git a/src/corelib/kernel/qsharedmemory_posix.cpp b/src/corelib/kernel/qsharedmemory_posix.cpp
index 4f9b3b14292..74f98a158ab 100644
--- a/src/corelib/kernel/qsharedmemory_posix.cpp
+++ b/src/corelib/kernel/qsharedmemory_posix.cpp
@@ -46,7 +46,6 @@
 
 #ifndef QT_NO_SHAREDMEMORY
 #include <sys/types.h>
-#include <sys/ipc.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
 #include <fcntl.h>
diff --git a/src/corelib/kernel/qsharedmemory_unix.cpp b/src/corelib/kernel/qsharedmemory_unix.cpp
index 4f55e523e38..92184a619b2 100644
--- a/src/corelib/kernel/qsharedmemory_unix.cpp
+++ b/src/corelib/kernel/qsharedmemory_unix.cpp
@@ -42,8 +42,8 @@
 
 #ifndef QT_NO_SHAREDMEMORY
 #include <sys/types.h>
-#include <sys/ipc.h>
 #ifndef QT_POSIX_IPC
+#include <sys/ipc.h>
 #include <sys/shm.h>
 #else
 #include <sys/mman.h>
diff --git a/src/corelib/kernel/qsystemsemaphore_posix.cpp b/src/corelib/kernel/qsystemsemaphore_posix.cpp
index abe3cc7e8c1..5a8e5941b78 100644
--- a/src/corelib/kernel/qsystemsemaphore_posix.cpp
+++ b/src/corelib/kernel/qsystemsemaphore_posix.cpp
@@ -45,8 +45,6 @@
 #ifndef QT_NO_SYSTEMSEMAPHORE
 
 #include <sys/types.h>
-#include <sys/ipc.h>
-#include <sys/sem.h>
 #include <fcntl.h>
 #include <errno.h>
 
diff --git a/src/corelib/kernel/qsystemsemaphore_unix.cpp b/src/corelib/kernel/qsystemsemaphore_unix.cpp
index cb34b8aeff0..d1ec39ea40a 100644
--- a/src/corelib/kernel/qsystemsemaphore_unix.cpp
+++ b/src/corelib/kernel/qsystemsemaphore_unix.cpp
@@ -40,8 +40,8 @@
 #ifndef QT_NO_SYSTEMSEMAPHORE
 
 #include <sys/types.h>
-#include <sys/ipc.h>
 #ifndef QT_POSIX_IPC
+#include <sys/ipc.h>
 #include <sys/sem.h>
 #endif
 #include <fcntl.h>
diff --git a/tests/auto/corelib/kernel/qsharedmemory/test/tst_qsharedmemory.cpp b/tests/auto/corelib/kernel/qsharedmemory/test/tst_qsharedmemory.cpp
index af932202fe6..5a92c2f0cb5 100644
--- a/tests/auto/corelib/kernel/qsharedmemory/test/tst_qsharedmemory.cpp
+++ b/tests/auto/corelib/kernel/qsharedmemory/test/tst_qsharedmemory.cpp
@@ -173,8 +173,8 @@ void tst_QSharedMemory::cleanup()
 #ifndef Q_OS_WIN
 #include <private/qsharedmemory_p.h>
 #include <sys/types.h>
-#include <sys/ipc.h>
 #ifndef QT_POSIX_IPC
+#include <sys/ipc.h>
 #include <sys/shm.h>
 #else
 #include <sys/mman.h>