diff --git a/libqpdf/Buffer.cc b/libqpdf/Buffer.cc
index 45b2119a..ae04fbc8 100644
--- a/libqpdf/Buffer.cc
+++ b/libqpdf/Buffer.cc
@@ -56,7 +56,7 @@ Buffer::Buffer(Buffer&& rhs) noexcept :
 Buffer&
 Buffer::operator=(Buffer&& rhs) noexcept
 {
-    std::swap(this->m, rhs.m);
+    std::swap(m, rhs.m);
     return *this;
 }
 
@@ -64,8 +64,7 @@ void
 Buffer::copy(Buffer const& rhs)
 {
     if (this != &rhs) {
-        this->m =
-            std::unique_ptr<Members>(new Members(rhs.m->size, nullptr, true));
+        m = std::unique_ptr<Members>(new Members(rhs.m->size, nullptr, true));
         if (m->size) {
             memcpy(m->buf, rhs.m->buf, m->size);
         }
diff --git a/libqpdf/QPDF.cc b/libqpdf/QPDF.cc
index 395fe42b..fba5380a 100644
--- a/libqpdf/QPDF.cc
+++ b/libqpdf/QPDF.cc
@@ -2407,10 +2407,10 @@ QPDF::getVersionAsPDFVersion()
     int extension_level = getExtensionLevel();
 
     std::regex v("^[[:space:]]*([0-9]+)\\.([0-9]+)");
-    std::smatch m;
-    if (std::regex_search(this->m->pdf_version, m, v)) {
-        major = QUtil::string_to_int(m[1].str().c_str());
-        minor = QUtil::string_to_int(m[2].str().c_str());
+    std::smatch match;
+    if (std::regex_search(m->pdf_version, match, v)) {
+        major = QUtil::string_to_int(match[1].str().c_str());
+        minor = QUtil::string_to_int(match[2].str().c_str());
     }
 
     return PDFVersion(major, minor, extension_level);
diff --git a/libqpdf/QPDF_linearization.cc b/libqpdf/QPDF_linearization.cc
index e2035b1b..d8742428 100644
--- a/libqpdf/QPDF_linearization.cc
+++ b/libqpdf/QPDF_linearization.cc
@@ -1462,8 +1462,7 @@ QPDF::calculateLinearizationData(std::map<int, int> const& object_stream_data)
                 // lc_thumbnail_private.
             }
             std::set<QPDFObjGen>& ogs =
-                this->m
-                    ->obj_user_to_objects[ObjUser(ObjUser::ou_thumb, toI(i))];
+                m->obj_user_to_objects[ObjUser(ObjUser::ou_thumb, toI(i))];
             for (auto const& og: ogs) {
                 if (lc_thumbnail_private.count(og)) {
                     lc_thumbnail_private.erase(og);