diff --git a/src/processor/proc_maps_linux.cc b/src/processor/proc_maps_linux.cc
index 3730acc3..1954cc86 100644
--- a/src/processor/proc_maps_linux.cc
+++ b/src/processor/proc_maps_linux.cc
@@ -61,7 +61,7 @@ bool ParseProcMaps(const std::string& input,
     // The final %n term captures the offset in the input string, which is used
     // to determine the path name. It *does not* increment the return value.
     // Refer to man 3 sscanf for details.
-    if (sscanf(line, "%" SCNxPTR "-%" SCNxPTR " %4c %lx %hhx:%hhx %ld %n",
+    if (sscanf(line, "%lx-%lx %4c %lx %hhx:%hhx %ld %n",
                &region.start, &region.end, permissions, &region.offset,
                &region.major_device, &region.minor_device, &region.inode,
                &path_index) < 7) {