diff --git a/src/opm/input/eclipse/share/keywords/000_Eclipse100/W/WELSPECS b/src/opm/input/eclipse/share/keywords/000_Eclipse100/W/WELSPECS
index 865640fd1..0a1ef186e 100644
--- a/src/opm/input/eclipse/share/keywords/000_Eclipse100/W/WELSPECS
+++ b/src/opm/input/eclipse/share/keywords/000_Eclipse100/W/WELSPECS
@@ -17,12 +17,14 @@
     {
       "item": 3,
       "name": "HEAD_I",
-      "value_type": "INT"
+      "value_type": "INT",
+      "default": 0
     },
     {
       "item": 4,
       "name": "HEAD_J",
-      "value_type": "INT"
+      "value_type": "INT",
+      "default": 0
     },
     {
       "item": 5,
diff --git a/src/opm/input/eclipse/share/keywords/900_OPM/C/COMPTRAJ b/src/opm/input/eclipse/share/keywords/900_OPM/C/COMPTRAJ
index 9c5d5db7d..77ca97f1e 100644
--- a/src/opm/input/eclipse/share/keywords/900_OPM/C/COMPTRAJ
+++ b/src/opm/input/eclipse/share/keywords/900_OPM/C/COMPTRAJ
@@ -13,6 +13,7 @@
       "item": 2,
       "name": "BRANCH_NUMBER",
       "value_type": "INT",
+      "default": 1,
       "comment": "Not used"
     },
     {
@@ -31,12 +32,14 @@
       "item": 5,
       "name": "PERF_REF",
       "value_type": "STRING",
+      "default": "TVD",
       "comment": "Not used"
     },
     {
       "item": 6,
       "name": "COMPLETION_NUMBER",
       "value_type": "INT",
+      "default": 1,
       "comment": "Not used"
     },
     {
diff --git a/src/opm/input/eclipse/share/keywords/900_OPM/W/WELTRAJ b/src/opm/input/eclipse/share/keywords/900_OPM/W/WELTRAJ
index d5f8d2173..9e8ec0f24 100644
--- a/src/opm/input/eclipse/share/keywords/900_OPM/W/WELTRAJ
+++ b/src/opm/input/eclipse/share/keywords/900_OPM/W/WELTRAJ
@@ -13,6 +13,7 @@
       "item": 2,
       "name": "BRANCH_NUMBER",
       "value_type": "INT",
+      "default": 1,
       "comment": "Not used"
     },
     {