diff --git a/Libraries/LibGUI/CppLexer.cpp b/Libraries/LibGUI/CppLexer.cpp
index 0a812a134c..c1f8853519 100644
--- a/Libraries/LibGUI/CppLexer.cpp
+++ b/Libraries/LibGUI/CppLexer.cpp
@@ -413,6 +413,38 @@ Vector<CppToken> CppLexer::lex()
             emit_token_equals(CppToken::Type::Equals, CppToken::Type::EqualsEquals);
             continue;
         }
+        if (ch == '&') {
+            begin_token();
+            consume();
+            if (peek() == '&') {
+                consume();
+                commit_token(CppToken::Type::AndAnd);
+                continue;
+            }
+            if (peek() == '=') {
+                consume();
+                commit_token(CppToken::Type::AndEquals);
+                continue;
+            }
+            commit_token(CppToken::Type::And);
+            continue;
+        }
+        if (ch == '|') {
+            begin_token();
+            consume();
+            if (peek() == '|') {
+                consume();
+                commit_token(CppToken::Type::PipePipe);
+                continue;
+            }
+            if (peek() == '=') {
+                consume();
+                commit_token(CppToken::Type::PipeEquals);
+                continue;
+            }
+            commit_token(CppToken::Type::Pipe);
+            continue;
+        }
         if (ch == ';') {
             emit_token(CppToken::Type::Semicolon);
             continue;
diff --git a/Libraries/LibGUI/CppLexer.h b/Libraries/LibGUI/CppLexer.h
index 4a7d077daa..88d0ebcf4e 100644
--- a/Libraries/LibGUI/CppLexer.h
+++ b/Libraries/LibGUI/CppLexer.h
@@ -65,6 +65,12 @@ namespace GUI {
     __TOKEN(PercentEquals)         \
     __TOKEN(Equals)                \
     __TOKEN(EqualsEquals)          \
+    __TOKEN(And)                   \
+    __TOKEN(AndAnd)                \
+    __TOKEN(AndEquals)             \
+    __TOKEN(Pipe)                  \
+    __TOKEN(PipePipe)              \
+    __TOKEN(PipeEquals)            \
     __TOKEN(Semicolon)             \
     __TOKEN(DoubleQuotedString)    \
     __TOKEN(SingleQuotedString)    \