diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5331d8bcb..861392563 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -33,12 +33,11 @@ if (ANDROID)
   endif()
 else()
   set(USE_RTMIDI_DEFAULT ON)
-  CHECK_INCLUDE_FILE(execinfo.h EXECINFO_FOUND)
-  if (EXECINFO_FOUND)
+  if (WIN32 OR APPLE)
     set(USE_BACKWARD_DEFAULT ON)
   else()
-    find_library(EXECINFO_IS_LIBRARY execinfo)
-    if (EXECINFO_IS_LIBRARY)
+    CHECK_INCLUDE_FILE(execinfo.h EXECINFO_FOUND)
+    if (EXECINFO_FOUND)
       set(USE_BACKWARD_DEFAULT ON)
     else()
       set(USE_BACKWARD_DEFAULT OFF)
diff --git a/src/gui/sysConf.cpp b/src/gui/sysConf.cpp
index 2cb177984..e54074861 100644
--- a/src/gui/sysConf.cpp
+++ b/src/gui/sysConf.cpp
@@ -594,7 +594,7 @@ void FurnaceGUI::drawSysConf(int chan, DivSystem type, unsigned int& flags, bool
       if (ImGui::RadioButton("14.32MHz (NTSC)",(flags&255)==1)) {
         copyOfFlags=(flags&(~255))|1;
       }
-      if (ImGui::RadioButton("14.19MHz (PAL)",(flags&255)==3)) {
+      if (ImGui::RadioButton("14.19MHz (PAL)",(flags&255)==2)) {
         copyOfFlags=(flags&(~255))|2;
       }
       if (ImGui::RadioButton("16MHz",(flags&255)==3)) {