diff --git a/src/corelib/ipc/qsharedmemory_posix.cpp b/src/corelib/ipc/qsharedmemory_posix.cpp
index 744a6d67a45..88448100e11 100644
--- a/src/corelib/ipc/qsharedmemory_posix.cpp
+++ b/src/corelib/ipc/qsharedmemory_posix.cpp
@@ -10,6 +10,7 @@
 
 #include <errno.h>
 
+#if QT_CONFIG(sharedmemory)
 #if QT_CONFIG(posix_shm)
 #include <sys/types.h>
 #include <sys/mman.h>
@@ -192,3 +193,4 @@ bool QSharedMemoryPosix::detach(QSharedMemoryPrivate *self)
 QT_END_NAMESPACE
 
 #endif // QT_CONFIG(posix_shm)
+#endif // QT_CONFIG(sharedmemory)
diff --git a/src/corelib/ipc/qsharedmemory_systemv.cpp b/src/corelib/ipc/qsharedmemory_systemv.cpp
index cc98b560aeb..716b7aedd11 100644
--- a/src/corelib/ipc/qsharedmemory_systemv.cpp
+++ b/src/corelib/ipc/qsharedmemory_systemv.cpp
@@ -11,6 +11,7 @@
 
 #include <errno.h>
 
+#if QT_CONFIG(sharedmemory)
 #if QT_CONFIG(sysv_shm)
 #include <sys/types.h>
 #include <sys/ipc.h>
@@ -205,3 +206,4 @@ bool QSharedMemorySystemV::detach(QSharedMemoryPrivate *self)
 QT_END_NAMESPACE
 
 #endif // QT_CONFIG(sysv_shm)
+#endif // QT_CONFIG(sharedmemory)