diff --git a/.github/workflows/mathics.yml b/.github/workflows/mathics.yml
index d709091..f6fefd0 100644
--- a/.github/workflows/mathics.yml
+++ b/.github/workflows/mathics.yml
@@ -31,9 +31,7 @@ jobs:
     - name: Test Mathics3
       run: |
         # Until next Mathics3/mathics-core release is out...
-        # git clone https://github.com/Mathics3/mathics-core.git
-        # Until next operator-info-from-JSON is merges
-        git clone -b operator-info-from-JSON https://github.com/Mathics3/mathics-core.git
+        git clone https://github.com/Mathics3/mathics-core.git
         cd mathics-core/
         make PIP_INSTALL_OPTS='[full]'
         # pip install Mathics3[full]
diff --git a/mathics_scanner/data/operators.yml b/mathics_scanner/data/operators.yml
index 4b6616a..e034972 100644
--- a/mathics_scanner/data/operators.yml
+++ b/mathics_scanner/data/operators.yml
@@ -490,7 +490,7 @@ Cap:
 
 CapitalDifferentialD:
   Precedence-Function: 550
-  precedence: 560
+  precedence: 550
   WolframLanguageData:
   WolframLanguageData-corrected: 23
   UnicodeCharacters.tr: 630
@@ -1119,7 +1119,7 @@ DifferenceDelta:
 
 DifferentialD:
   Precedence-Function: 550
-  precedence: 560
+  precedence: 550
   WolframLanguageData:
   WolframLanguageData-corrected: 23
   UnicodeCharacters.tr: 630