diff --git a/src/mathed/math_deliminset.C b/src/mathed/math_deliminset.C
index 84a1001f99..9fc14cad78 100644
--- a/src/mathed/math_deliminset.C
+++ b/src/mathed/math_deliminset.C
@@ -1,3 +1,5 @@
+#include <config.h>
+
 #ifdef __GNUG__
 #pragma implementation
 #endif
@@ -7,6 +9,7 @@
 #include "mathed/support.h"
 #include "support/LOstream.h"
 
+using std::max;
 
 MathDelimInset::MathDelimInset(latexkeys const * l, latexkeys const * r)
 	: MathNestInset(1), left_(l), right_(r)
diff --git a/src/mathed/math_parser.C b/src/mathed/math_parser.C
index a9dd1d1f91..ac4e2519b8 100644
--- a/src/mathed/math_parser.C
+++ b/src/mathed/math_parser.C
@@ -46,6 +46,8 @@
 #include "support/lstrings.h"
 
 using std::istream;
+using std::ostream;
+using std::ios;
 using std::endl;
 
 
@@ -128,7 +130,7 @@ enum {
 	FLAG_NEWLINE    = 1 << 6,  //  next \\\\ ends the parsing process
 	FLAG_ITEM       = 1 << 7,  //  read a (possibly braced token)
 	FLAG_BLOCK      = 1 << 8,  //  next block ends the parsing process
-	FLAG_LEAVE      = 1 << 9,  //  leave the loop at the end
+	FLAG_LEAVE      = 1 << 9   //  leave the loop at the end
 };