diff --git a/libc/bionic/malloc_debug_qemu.cpp b/libc/bionic/malloc_debug_qemu.cpp
index fa40b35..b01cef2 100644
--- a/libc/bionic/malloc_debug_qemu.cpp
+++ b/libc/bionic/malloc_debug_qemu.cpp
@@ -612,7 +612,7 @@
         error_log("Unable to open /dev/qemu_trace");
         return false;
     } else {
-        qtrace = mmap(NULL, PAGESIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+        qtrace = mmap(NULL, PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
         close(fd);
 
         if (qtrace == MAP_FAILED) {
diff --git a/libc/bionic/sysconf.cpp b/libc/bionic/sysconf.cpp
index 61039b2..8a55f7e 100644
--- a/libc/bionic/sysconf.cpp
+++ b/libc/bionic/sysconf.cpp
@@ -97,8 +97,10 @@
     case _SC_ATEXIT_MAX:        return LONG_MAX;    // Unlimited.
     case _SC_IOV_MAX:           return UIO_MAXIOV;
 
-    case _SC_PAGESIZE:          // Fall through, PAGESIZE and PAGE_SIZE always hold the same value.
-    case _SC_PAGE_SIZE:         return static_cast<long>(getauxval(AT_PAGESZ));
+    // _SC_PAGESIZE and _SC_PAGE_SIZE are distinct, but return the same value.
+    case _SC_PAGESIZE:
+    case _SC_PAGE_SIZE:
+      return static_cast<long>(getauxval(AT_PAGESZ));
 
     case _SC_XOPEN_UNIX:        return _XOPEN_UNIX;
     case _SC_AIO_LISTIO_MAX:    return _POSIX_AIO_LISTIO_MAX;     // Minimum requirement.