diff --git a/Makefile b/Makefile
index 80d2cd9..1a27fa7 100644
--- a/Makefile
+++ b/Makefile
@@ -66,9 +66,9 @@ library: $(LIB_BUILD)
 $(LIB_BUILD): $(LIB_OBJ)
 	$(LIBLINKER) $(LIB_LFLAGS) $(LIB_BUILD) $(LIB_OBJ)
 
+# The auto-generated code from bison and flex contains some parts the compiler complains about with -Wall.
 $(SRCPARSER)/flex_lexer.o: $(SRCPARSER)/flex_lexer.cpp $(SRCPARSER)/bison_parser.cpp
 	$(CXX) $(LIB_CFLAGS) -c -o $@ $< -Wno-sign-compare -Wno-unneeded-internal-declaration -Wno-register
-
 $(SRCPARSER)/bison_parser.o: $(SRCPARSER)/bison_parser.cpp
 	$(CXX) $(LIB_CFLAGS) -c -o $@ $< -Wno-unused-but-set-variable
 
diff --git a/src/sql/ImportExportOptions.h b/src/sql/ImportExportOptions.h
index 06a495f..42b0058 100644
--- a/src/sql/ImportExportOptions.h
+++ b/src/sql/ImportExportOptions.h
@@ -3,7 +3,8 @@
 
 namespace hsql {
 
-// Name unchanged for compatibility.
+// Name unchanged for compatibility. Historically, this was only used for import statements before we introduced export
+// statements (`COPY ... TO`). We did not change the enum name to accomodate forks.
 enum ImportType {
   kImportCSV,
   kImportTbl,  // Hyrise file format.