diff --git a/mkspecs/qnx-armle-v7-qcc/qplatformdefs.h b/mkspecs/qnx-armle-v7-qcc/qplatformdefs.h
index 27e4a3aa412..2f95f0d392c 100644
--- a/mkspecs/qnx-armle-v7-qcc/qplatformdefs.h
+++ b/mkspecs/qnx-armle-v7-qcc/qplatformdefs.h
@@ -83,7 +83,7 @@
 #include <arpa/inet.h>
 
 #define QT_USE_XOPEN_LFS_EXTENSIONS
-#if defined(__EXT_QNX__READDIR_R) && !defined(__EXT_QNX__READDIR64_R)
+#if !defined(__EXT_QNX__READDIR64_R)
 #define QT_NO_READDIR64
 #endif
 #include "../common/posix/qplatformdefs.h"
diff --git a/mkspecs/qnx-x86-qcc/qplatformdefs.h b/mkspecs/qnx-x86-qcc/qplatformdefs.h
index 246f82e27fd..b47aecde0d0 100644
--- a/mkspecs/qnx-x86-qcc/qplatformdefs.h
+++ b/mkspecs/qnx-x86-qcc/qplatformdefs.h
@@ -83,7 +83,7 @@
 #include <arpa/inet.h>
 
 #define QT_USE_XOPEN_LFS_EXTENSIONS
-#if defined(__EXT_QNX__READDIR_R) && !defined(__EXT_QNX__READDIR64_R)
+#if !defined(__EXT_QNX__READDIR64_R)
 #define QT_NO_READDIR64
 #endif
 #include "../common/posix/qplatformdefs.h"