diff --git a/python/tests/data/JFUNC.DATA b/python/tests/data/JFUNC.DATA
index e41d964c6..0c5effafd 100644
--- a/python/tests/data/JFUNC.DATA
+++ b/python/tests/data/JFUNC.DATA
@@ -5,6 +5,10 @@ TITLE
 
 DIMENS
  10 10 10 /
+
+ENDSCALE
+/
+
 GRID
 DX
 1000*0.25 /
diff --git a/python/tests/test_state.py b/python/tests/test_state.py
index 5f807b9d3..9051df7e8 100644
--- a/python/tests/test_state.py
+++ b/python/tests/test_state.py
@@ -156,6 +156,8 @@ SATNUM
         jfunc_gas = """
 DIMENS
  10 10 10 /
+ENDSCALE
+/
 GRID
 DX
 1000*0.25 /
diff --git a/src/opm/input/eclipse/share/keywords/000_Eclipse100/J/JFUNC b/src/opm/input/eclipse/share/keywords/000_Eclipse100/J/JFUNC
index 7ff81128a..679c11da5 100644
--- a/src/opm/input/eclipse/share/keywords/000_Eclipse100/J/JFUNC
+++ b/src/opm/input/eclipse/share/keywords/000_Eclipse100/J/JFUNC
@@ -4,6 +4,7 @@
     "GRID"
   ],
   "size": 1,
+  "requires": ["ENDSCALE"],
   "items": [
     {
       "name": "FLAG",
diff --git a/src/opm/input/eclipse/share/keywords/000_Eclipse100/J/JFUNCR b/src/opm/input/eclipse/share/keywords/000_Eclipse100/J/JFUNCR
index 80885f45f..bf865940e 100644
--- a/src/opm/input/eclipse/share/keywords/000_Eclipse100/J/JFUNCR
+++ b/src/opm/input/eclipse/share/keywords/000_Eclipse100/J/JFUNCR
@@ -7,6 +7,7 @@
     "keyword": "TABDIMS",
     "item": "NTSFUN"
   },
+  "requires": ["ENDSCALE"],
   "items": [
     {
       "name": "J_FUNCTION",