diff --git a/lib/ffi_generator/generators/from_c_generator/generator.rb b/lib/ffi_generator/generators/from_c_generator/generator.rb
index b9f1df8..e2e66d8 100644
--- a/lib/ffi_generator/generators/from_c_generator/generator.rb
+++ b/lib/ffi_generator/generators/from_c_generator/generator.rb
@@ -525,7 +525,7 @@ def read_macro_definition(declaration_cursor, name)
     def resolve_type(full_type, is_array = false)
       canonical_type = full_type.canonical
       data_array = case canonical_type.kind
-      when :void, :bool, :u_char, :u_short, :u_int, :u_long, :u_long_long, :char_s, :s_char, :short, :int, :long, :long_long, :float, :double
+      when :void, :bool, :u_char, :u_short, :u_int, :u_long, :u_long_long, :char_s, :s_char, :short, :int, :long, :long_long, :float, :double, :long_double
         PrimitiveType.new(canonical_type.kind)
       when :pointer
         if is_array
diff --git a/lib/ffi_generator/generators/from_c_generator/primitive_type.rb b/lib/ffi_generator/generators/from_c_generator/primitive_type.rb
index 708769a..8506159 100644
--- a/lib/ffi_generator/generators/from_c_generator/primitive_type.rb
+++ b/lib/ffi_generator/generators/from_c_generator/primitive_type.rb
@@ -18,7 +18,7 @@ def ruby_name
           "Boolean"
         when :u_char, :u_short, :u_int, :u_long, :u_long_long, :char_s, :s_char, :short, :int, :long, :long_long
           "Integer"
-        when :float, :double
+        when :float, :double, :long_double
           "Float"
         end
       end
@@ -39,6 +39,7 @@ def ruby_ffi_type
         when :long_long       then ":long_long"
         when :float           then ":float"
         when :double          then ":double"
+        when :long_double     then ":long_double"
         end
       end