diff --git a/CMakeLists.txt b/CMakeLists.txt
index e69b29b..2472991 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,8 +14,8 @@ set(PDF2HTMLEX_VERSION "0.1")
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wunused-function")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
-#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ggdb")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2")
+#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ggdb")
 
 configure_file (src/config.h.in src/config.h)
 
diff --git a/src/HTMLRenderer/install.cc b/src/HTMLRenderer/install.cc
index 080a09e..1c7d56e 100644
--- a/src/HTMLRenderer/install.cc
+++ b/src/HTMLRenderer/install.cc
@@ -127,7 +127,7 @@ void HTMLRenderer::install_embedded_font(GfxFont * font, const string & suffix,
 
     auto ctu = font->getToUnicode();
     int * code2GID = nullptr;
-    int code2GID_len;
+    int code2GID_len = 0;
     if(ctu)
     {
         // TODO: ctu could be CID2Unicode for CID fonts