diff --git a/mkspecs/netbsd-g++/qmake.conf b/mkspecs/netbsd-g++/qmake.conf
index 04c675da24..b470c9d08a 100644
--- a/mkspecs/netbsd-g++/qmake.conf
+++ b/mkspecs/netbsd-g++/qmake.conf
@@ -61,6 +61,7 @@ QMAKE_LFLAGS_RPATH      = -Wl,-rpath,
 
 QMAKE_LIBS              =
 QMAKE_LIBS_DYNLOAD      =
+QMAKE_LIBS_EXECINFO     = -lexecinfo
 QMAKE_LIBS_X11          = -lXext -lX11 -lm
 QMAKE_LIBS_OPENGL       = -lGL
 QMAKE_LIBS_THREAD       =
diff --git a/mkspecs/openbsd-g++/qmake.conf b/mkspecs/openbsd-g++/qmake.conf
index 10330bc081..6a66f086ed 100644
--- a/mkspecs/openbsd-g++/qmake.conf
+++ b/mkspecs/openbsd-g++/qmake.conf
@@ -62,6 +62,7 @@ QMAKE_LFLAGS_NOUNDEF    = -Wl,-no_unresolved
 
 QMAKE_LIBS              =
 QMAKE_LIBS_DYNLOAD      =
+QMAKE_LIBS_EXECINFO     = -lexecinfo
 QMAKE_LIBS_X11          = -lXext -lX11 -lm
 QMAKE_LIBS_OPENGL       = -lGL
 QMAKE_LIBS_THREAD       =