diff --git a/m4/iem_ftgl.m4 b/m4/iem_ftgl.m4
index 218152cac0c0bfb1f726924e7c25ac0639010ce4..8ad418cdd3abf91f1f2b94174bc3088f98333b05 100644
--- a/m4/iem_ftgl.m4
+++ b/m4/iem_ftgl.m4
@@ -22,5 +22,5 @@ AS_IF([test "x${have_ftgl}" != "xyes"],[
  GEM_LIB_FTGL_CFLAGS=""
  GEM_LIB_FTGL_LIBS=""
 ])
-AM_CONDITIONAL([HAVE_LIB_FTGL], [test "x{have_ftgl}" = xyes ])
+AM_CONDITIONAL([HAVE_LIB_FTGL], [test "x${have_ftgl}" = xyes ])
 ]) dnl IEM_CHECK_FTGL