diff --git a/src/drm-shim/device.c b/src/drm-shim/device.c
index c5be29b0f07..7dfe85b6a56 100644
--- a/src/drm-shim/device.c
+++ b/src/drm-shim/device.c
@@ -103,7 +103,7 @@ drm_shim_device_init(void)
     * with EINVAL.
     */
 
-   shim_page_size = sysconf(_SC_PAGE_SIZE);
+   shim_page_size = sysconf(_SC_PAGESIZE);
 
    util_vma_heap_init(&shim_device.mem_heap, shim_page_size,
                       SHIM_MEM_SIZE - shim_page_size);
diff --git a/src/util/os_misc.c b/src/util/os_misc.c
index 4b7916634b3..0689fec920c 100644
--- a/src/util/os_misc.c
+++ b/src/util/os_misc.c
@@ -286,7 +286,7 @@ os_get_total_physical_memory(uint64_t *size)
 {
 #if DETECT_OS_LINUX || DETECT_OS_CYGWIN || DETECT_OS_SOLARIS || DETECT_OS_HURD || DETECT_OS_MANAGARM
    const long phys_pages = sysconf(_SC_PHYS_PAGES);
-   const long page_size = sysconf(_SC_PAGE_SIZE);
+   const long page_size = sysconf(_SC_PAGESIZE);
 
    if (phys_pages <= 0 || page_size <= 0)
       return false;
@@ -413,7 +413,7 @@ bool
 os_get_page_size(uint64_t *size)
 {
 #if DETECT_OS_POSIX_LITE && !DETECT_OS_APPLE && !DETECT_OS_HAIKU
-   const long page_size = sysconf(_SC_PAGE_SIZE);
+   const long page_size = sysconf(_SC_PAGESIZE);
 
    if (page_size <= 0)
       return false;