diff --git a/configure.ac b/configure.ac
index 19f6158..86a8b05 100644
--- a/configure.ac
+++ b/configure.ac
@@ -205,7 +205,6 @@ AC_CHECK_HEADERS(glob.h)        # for heap-profile-table (cleaning up profiles)
 AC_CHECK_HEADERS(execinfo.h)    # for stacktrace? and heapchecker_unittest
 AC_CHECK_HEADERS(unwind.h)      # for stacktrace
 AC_CHECK_HEADERS(sched.h)       # for being nice in our spinlock code
-AC_CHECK_HEADERS(conflict-signal.h)      # defined on some windows platforms?
 AC_CHECK_HEADERS(sys/prctl.h)   # for thread_lister (needed by leak-checker)
 AC_CHECK_HEADERS(linux/ptrace.h)# also needed by leak-checker
 AC_CHECK_HEADERS(sys/syscall.h)
diff --git a/src/profile-handler.h b/src/profile-handler.h
index b6bb0a1..4d3d804 100644
--- a/src/profile-handler.h
+++ b/src/profile-handler.h
@@ -50,9 +50,6 @@
 
 #include "config.h"
 #include <signal.h>
-#ifdef COMPILER_MSVC
-#include "conflict-signal.h"
-#endif
 #include "base/basictypes.h"
 
 /* Forward declaration. */