diff --git a/mex/sources/build_matlab.m b/mex/sources/build_matlab.m
index c8a172b75bcb574031628e37db02232847466acf..cf470a67d3f6c420ad264d5c1e4e7e2524c5692d 100644
--- a/mex/sources/build_matlab.m
+++ b/mex/sources/build_matlab.m
@@ -71,8 +71,18 @@ else
     OUTPUT_DIR = '../2007b';
 end
 
+
+% Set Optimization and Debug flags
+CXXOPTIMFLAGS = ' CXXOPTIMFLAGS=-O3 ';
+COPTIMFLAGS = ' COPTIMFLAGS=-O3 ';
+CXXDEBUGFLAGS = ' CXXDEBUGFLAGS= ';
+CDEBUGFLAGS = ' CDEBUGFLAGS= ';
+LDOPTIMFLAGS = ' LDOPTIMFLAGS=-O3 ';
+LDDEBUGFLAGS = ' LDDEBUGFLAGS= ';
+COMPILE_OPTIONS = [ COMPILE_OPTIONS CDEBUGFLAGS COPTIMFLAGS CXXDEBUGFLAGS CXXOPTIMFLAGS LDDEBUGFLAGS LDOPTIMFLAGS];
+
 % Comment next line to suppress compilation debugging info
-% COMPILE_OPTIONS = [ COMPILE_OPTIONS ' -v' ];
+COMPILE_OPTIONS = [ COMPILE_OPTIONS ' -v' ];
 
 COMPILE_COMMAND = [ 'mex ' COMPILE_OPTIONS ' -outdir ' OUTPUT_DIR ];