diff --git a/include/valijson/adapters/yaml_cpp_adapter.hpp b/include/valijson/adapters/yaml_cpp_adapter.hpp
index cf96265..ffcd0d1 100644
--- a/include/valijson/adapters/yaml_cpp_adapter.hpp
+++ b/include/valijson/adapters/yaml_cpp_adapter.hpp
@@ -402,17 +402,17 @@ class YamlCppValue
 
     bool isBool() const
     {
-        return m_value.IsScalar();
+        return false;
     }
 
     bool isDouble() const
     {
-        return m_value.IsScalar();
+        return false;
     }
 
     bool isInteger() const
     {
-        return m_value.IsScalar();
+        return false;
     }
 
     bool isNull() const
@@ -422,7 +422,7 @@ class YamlCppValue
 
     bool isNumber() const
     {
-        return m_value.IsScalar();
+        return false;
     }
 
     bool isObject() const
@@ -432,7 +432,7 @@ class YamlCppValue
 
     bool isString() const
     {
-        return m_value.IsScalar();
+        return true;
     }
 
   private:
diff --git a/tests/test_yaml_cpp_adapter.cpp b/tests/test_yaml_cpp_adapter.cpp
index f3ac43a..21de2e7 100644
--- a/tests/test_yaml_cpp_adapter.cpp
+++ b/tests/test_yaml_cpp_adapter.cpp
@@ -34,7 +34,9 @@ TEST_F(TestYamlCppAdapter, BasicArrayIteration)
     // Ensure that the elements are returned in the order they were inserted
     unsigned int expectedValue = 0;
     for (const valijson::adapters::YamlCppAdapter value : adapter.getArray()) {
-        ASSERT_TRUE(value.isNumber());
+        ASSERT_TRUE(value.isString());
+        ASSERT_FALSE(value.isNumber());
+        ASSERT_TRUE(value.maybeDouble());
         EXPECT_EQ(double(expectedValue), value.getDouble());
         expectedValue++;
     }