diff --git a/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/xform/TypeCheckedTests.java b/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/xform/TypeCheckedTests.java
index 957c4aa6be..d1f4a44f84 100644
--- a/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/xform/TypeCheckedTests.java
+++ b/base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/xform/TypeCheckedTests.java
@@ -5645,4 +5645,25 @@ public void testTypeChecked10592() {
 
         runConformTest(sources, "works", "groovy.lang.MissingPropertyException: No such property: value for class: Face");
     }
+
+    @Test
+    public void testTypeChecked10624() {
+        //@formatter:off
+        String[] sources = {
+            "Main.groovy",
+            "class A<T> {\n" +
+            "}\n" +
+            "class B<T> {\n" +
+            "  B(A<T> a) { }\n" +
+            "}\n" +
+            "@groovy.transform.TypeChecked\n" +
+            "void test() {\n" +
+            "  B<Float> x = new B<>(new A<>())\n" + // Cannot assign B<Object> to B<Float>
+            "}\n" +
+            "test()\n",
+        };
+        //@formatter:on
+
+        runConformTest(sources);
+    }
 }
diff --git a/base/org.codehaus.groovy25/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java b/base/org.codehaus.groovy25/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
index 6744552119..3ccb496899 100644
--- a/base/org.codehaus.groovy25/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
+++ b/base/org.codehaus.groovy25/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
@@ -2806,7 +2806,7 @@ && findMethod(receiver, "<init>", init(argumentTypes)).size() == 1) {
                             && parameters.length == argumentTypes.length - 1) {
                         ctor = typeCheckMapConstructor(call, receiver, arguments);
                     } else {
-                        if (parameters.length > 0 && receiver.getGenericsTypes() != null) { // GROOVY-8961, GROOVY-9734, GROOVY-9915, GROOVY-10482, et al.
+                        if (parameters.length > 0 && asBoolean(receiver.getGenericsTypes())) { // GROOVY-10283, GROOVY-10316, GROOVY-10482, GROOVY-10624, et al.
                             Map<GenericsTypeName, GenericsType> context = extractPlaceHolders(null, receiver, ctor.getDeclaringClass());
                             parameters = parameters.clone(); for (int i = 0; i < parameters.length; i += 1)
                                 parameters[i] = new Parameter(applyGenericsContext(context, parameters[i].getType()), parameters[i].getName());
diff --git a/base/org.codehaus.groovy30/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java b/base/org.codehaus.groovy30/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
index 208b77b9c8..d5ac75a956 100644
--- a/base/org.codehaus.groovy30/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
+++ b/base/org.codehaus.groovy30/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
@@ -212,6 +212,7 @@
 import static org.codehaus.groovy.ast.tools.WideningCategories.isNumberCategory;
 import static org.codehaus.groovy.ast.tools.WideningCategories.lowestUpperBound;
 import static org.codehaus.groovy.classgen.AsmClassGenerator.MINIMUM_BYTECODE_VERSION;
+import static org.codehaus.groovy.runtime.DefaultGroovyMethods.asBoolean;
 import static org.codehaus.groovy.runtime.DefaultGroovyMethods.init;
 import static org.codehaus.groovy.runtime.DefaultGroovyMethods.last;
 import static org.codehaus.groovy.syntax.Types.ASSIGN;
@@ -2636,7 +2637,7 @@ && findMethod(receiver, "<init>", init(argumentTypes)).size() == 1) {
                             && parameters.length == argumentTypes.length - 1) {
                         ctor = typeCheckMapConstructor(call, receiver, arguments);
                     } else {
-                        if (receiver.getGenericsTypes() != null) { // GROOVY-8961, GROOVY-9734, GROOVY-9915, GROOVY-10482, et al.
+                        if (asBoolean(receiver.getGenericsTypes())) { // GROOVY-10283, GROOVY-10316, GROOVY-10482, GROOVY-10624, et al.
                             Map<GenericsTypeName, GenericsType> context = extractPlaceHolders(null, receiver, ctor.getDeclaringClass());
                             parameters = Arrays.stream(parameters).map(p -> new Parameter(applyGenericsContext(context, p.getType()), p.getName())).toArray(Parameter[]::new);
                         }
diff --git a/base/org.codehaus.groovy40/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java b/base/org.codehaus.groovy40/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
index 414c8f2bde..f0dab850a9 100644
--- a/base/org.codehaus.groovy40/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
+++ b/base/org.codehaus.groovy40/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java
@@ -231,6 +231,7 @@
 import static org.codehaus.groovy.ast.tools.WideningCategories.isLongCategory;
 import static org.codehaus.groovy.ast.tools.WideningCategories.isNumberCategory;
 import static org.codehaus.groovy.ast.tools.WideningCategories.lowestUpperBound;
+import static org.codehaus.groovy.runtime.DefaultGroovyMethods.asBoolean;
 import static org.codehaus.groovy.runtime.DefaultGroovyMethods.init;
 import static org.codehaus.groovy.runtime.DefaultGroovyMethods.last;
 import static org.codehaus.groovy.syntax.Types.ASSIGN;
@@ -2319,7 +2320,7 @@ && findMethod(receiver, "<init>", init(argumentTypes)).size() == 1) {
                             && parameters.length == argumentTypes.length - 1) {
                         ctor = typeCheckMapConstructor(call, receiver, arguments);
                     } else {
-                        if (receiver.getGenericsTypes() != null) { // GROOVY-8909, GROOVY-9734, GROOVY-9844, GROOVY-9915, GROOVY-10482, et al.
+                        if (asBoolean(receiver.getGenericsTypes())) { // GROOVY-10283, GROOVY-10316, GROOVY-10482, GROOVY-10624, et al.
                             Map<GenericsTypeName, GenericsType> context = extractPlaceHoldersVisibleToDeclaration(receiver, ctor, argumentList);
                             parameters = Arrays.stream(parameters).map(p -> new Parameter(applyGenericsContext(context, p.getType()), p.getName())).toArray(Parameter[]::new);
                         }