diff --git a/m4/ax_code_coverage.m4 b/m4/ax_code_coverage.m4
index 352165b4..53dcf7b1 100644
--- a/m4/ax_code_coverage.m4
+++ b/m4/ax_code_coverage.m4
@@ -235,8 +235,8 @@ AC_DEFUN([_AX_CODE_COVERAGE_ENABLED],[
 	dnl Build the code coverage flags
 	dnl Define CODE_COVERAGE_LDFLAGS for backwards compatibility
 	CODE_COVERAGE_CPPFLAGS="-DNDEBUG"
-	CODE_COVERAGE_CFLAGS="-O0 -g -fprofile-arcs -ftest-coverage"
-	CODE_COVERAGE_CXXFLAGS="-O0 -g -fprofile-arcs -ftest-coverage"
+	CODE_COVERAGE_CFLAGS="-O0 -g -fprofile-arcs -ftest-coverage -fprofile-abs-path"
+	CODE_COVERAGE_CXXFLAGS="-O0 -g -fprofile-arcs -ftest-coverage -fprofile-abs-path"
 	CODE_COVERAGE_LIBS="-lgcov"
 
 	AC_SUBST([CODE_COVERAGE_CPPFLAGS])