diff --git a/src/sfall_opcodes.cc b/src/sfall_opcodes.cc
index 73c2aee..5e7f77e 100644
--- a/src/sfall_opcodes.cc
+++ b/src/sfall_opcodes.cc
@@ -539,9 +539,13 @@ static void opGetArray(Program* program)
     // TODO: If type is string then do substr instead of array operation
 
     auto key = programStackPopValue(program);
-    auto arrayId = programStackPopInteger(program);
-    auto value = GetArray(arrayId, SFallScriptValue { key });
-    programStackPushValue(program, value);
+
+    auto arrayId = SFallScriptValue { programStackPopValue(program) };
+    if (arrayId.isInt()) {
+        auto value = GetArray(arrayId.integerValue, SFallScriptValue { key });
+        programStackPushValue(program, value);
+    } else {
+    }
 }
 
 // free_array
diff --git a/src/sfall_script_value.cc b/src/sfall_script_value.cc
index 8da8ca4..fa2d35b 100644
--- a/src/sfall_script_value.cc
+++ b/src/sfall_script_value.cc
@@ -18,7 +18,7 @@ SFallScriptValue::SFallScriptValue(Object* value)
     opcode = VALUE_TYPE_PTR;
     pointerValue = value;
 };
-SFallScriptValue::SFallScriptValue(ProgramValue& value)
+SFallScriptValue::SFallScriptValue(const ProgramValue& value)
 {
     opcode = value.opcode;
 
diff --git a/src/sfall_script_value.h b/src/sfall_script_value.h
index b5a0ffd..05d6dcd 100644
--- a/src/sfall_script_value.h
+++ b/src/sfall_script_value.h
@@ -11,7 +11,7 @@ public:
     SFallScriptValue();
     SFallScriptValue(int value);
     SFallScriptValue(Object* value);
-    SFallScriptValue(ProgramValue& value);
+    SFallScriptValue(const ProgramValue& value);
 
     bool isInt() const;
     bool isFloat() const;