diff --git a/merlin-framework-processor/src/main/java/gov/nasa/jpl/aerie/merlin/processor/MissionModelParser.java b/merlin-framework-processor/src/main/java/gov/nasa/jpl/aerie/merlin/processor/MissionModelParser.java
index 22d5ca72d6..46c3993816 100644
--- a/merlin-framework-processor/src/main/java/gov/nasa/jpl/aerie/merlin/processor/MissionModelParser.java
+++ b/merlin-framework-processor/src/main/java/gov/nasa/jpl/aerie/merlin/processor/MissionModelParser.java
@@ -386,6 +386,10 @@ private ActivityTypeRecord parseActivityType(final PackageElement missionModelEl
     final var validations = this.getExportValidations(activityTypeElement, parameters);
     final var effectModel = this.getActivityEffectModel(activityTypeElement);
 
+    if (!parameters.isEmpty()) {
+      checkForStaticParameters(name, parameters);
+    }
+
     final var durationParameterName = effectModel.flatMap(EffectModelRecord::durationParameter);
     if (durationParameterName.isPresent()) {
       validateControllableDurationParameter(name, parameters, durationParameterName.get());
@@ -409,6 +413,17 @@ class (old-style) or as a record (new-style) by determining
         effectModel);
   }
 
+  private void checkForStaticParameters(String activityName, List<ParameterRecord> parameters) throws InvalidMissionModelException {
+    for (final var parameter: parameters) {
+      if (parameter.element.getModifiers().contains(Modifier.STATIC)) {
+        throw new InvalidMissionModelException(
+            "In activity " + activityName +
+            ", parameter \"" + parameter.name +"\"" +
+            " is declared as static, but this is not valid for activity parameters");
+      }
+    }
+  }
+
   private void validateControllableDurationParameter(
       final String activityName,
       final List<ParameterRecord> parameters,