diff --git a/src/sksl/dsl/DSLType.cpp b/src/sksl/dsl/DSLType.cpp
index 109e0f41bc..7a24797d25 100644
--- a/src/sksl/dsl/DSLType.cpp
+++ b/src/sksl/dsl/DSLType.cpp
@@ -187,7 +187,13 @@ DSLExpression DSLType::Construct(DSLType type, SkTArray<DSLExpression> argArray)
 }
 
 DSLType Array(const DSLType& base, int count) {
-    SkASSERT(count >= 1);
+    if (count <= 0) {
+        DSLWriter::ReportError("error: array size must be positive\n");
+    }
+    if (base.isArray()) {
+        DSLWriter::ReportError("error: multidimensional arrays are not permitted\n");
+        return base;
+    }
     return DSLWriter::SymbolTable()->addArrayDimension(&base.skslType(), count);
 }
 
diff --git a/tests/SkSLDSLTest.cpp b/tests/SkSLDSLTest.cpp
index dbd55ca160..216d27edd6 100644
--- a/tests/SkSLDSLTest.cpp
+++ b/tests/SkSLDSLTest.cpp
@@ -556,6 +556,16 @@ DEF_GPUTEST_FOR_MOCK_CONTEXT(DSLType, r, ctxInfo) {
     DSLExpression e = x + 1;
     REPORTER_ASSERT(r, e.type().isFloat());
     e.release();
+
+    {
+        ExpectError error(r, "error: array size must be positive\n");
+        Array(kFloat_Type, -1);
+    }
+
+    {
+        ExpectError error(r, "error: multidimensional arrays are not permitted\n");
+        Array(Array(kFloat_Type, 2), 2);
+    }
 }
 
 DEF_GPUTEST_FOR_MOCK_CONTEXT(DSLMatrices, r, ctxInfo) {