diff --git a/lib/linguist/generated.rb b/lib/linguist/generated.rb
index b93f7ea6..4a67fabd 100644
--- a/lib/linguist/generated.rb
+++ b/lib/linguist/generated.rb
@@ -62,6 +62,7 @@ module Linguist
       generated_parser? ||
       generated_net_docfile? ||
       generated_postscript? ||
+      compiled_cython_file? ||
       generated_protocol_buffer_go? ||
       generated_protocol_buffer? ||
       generated_jni_header? ||
@@ -270,5 +271,17 @@ module Linguist
       # VCR Cassettes have "recorded_with: VCR" in the second last line.
       return lines[-2].include?("recorded_with: VCR")
     end
+
+    # Internal: Is this a compiled C/C++ file from Cython?
+    #
+    # Cython-compiled C/C++ files typically contain:
+    # /* Generated by Cython x.x.x on ... */
+    # on the first line.
+    #
+    # Return true or false
+    def compiled_cython_file?
+      return false unless ['.c', '.cpp'].include? extname
+      return lines[0].include?("Generated by Cython")
+    end
   end
 end
diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index a0a137ad..4d6404f7 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -2213,6 +2213,7 @@ PLSQL:
   - .pkb
   - .pks
   - .plb
+  - .plsql
   - .sql
 
 #Postgres 
diff --git a/samples/PLSQL/prime#.plsql b/samples/PLSQL/prime#.plsql
new file mode 100644
index 00000000..1a4785a1
--- /dev/null
+++ b/samples/PLSQL/prime#.plsql
@@ -0,0 +1,93 @@
+create or replace package prime#
+is
+  invalid_argument_error                          exception;
+
+  function nth (
+    i_num                                         pls_integer
+  ) return number;
+end prime#;
+/
+
+create or replace package body prime#
+is
+  type t_primes is table of number index by pls_integer;
+  b_primes                                       t_primes;
+
+  function is_prime(
+    i_candidate                                   number
+  ) return boolean
+  is
+    l_num                           number := 1;
+    l_prime                         number;
+    l_result                        number;
+  begin
+  	if i_candidate < 2 then
+  	  return false;
+  	end if;
+
+    loop
+      l_prime := nth(l_num);
+      if l_prime = i_candidate then
+        return true;
+      end if;
+
+      l_result := i_candidate / l_prime;
+    	if l_result = ceil(l_result) then
+    	  return false;
+    	end if;
+
+    	l_num := l_num + 1;
+    	exit when l_result <= l_prime;
+    end loop;
+
+    return true;
+  end is_prime;
+
+  function next (
+    i_prime                                       pls_integer
+  ) return number
+  is
+    l_next                          number;
+  begin
+    l_next := i_prime + case mod(i_prime, 2) when 0 then 1 else 2 end;
+
+    while not is_prime(l_next) loop
+      l_next := l_next + 2;
+    end loop;
+    return l_next;
+  end next;
+	
+  function nth (
+    i_num                                         pls_integer
+  ) return number
+  is
+    l_index                         number := 2;
+    l_prime                         number := 3;
+  begin
+    if   i_num < 1
+      or ceil(i_num) != i_num
+    then
+      raise invalid_argument_error;
+    end if;
+
+    case i_num
+      when 1 then return 2;
+      else
+        if b_primes.exists(i_num) then
+          return b_primes(i_num);
+        end if;
+        while l_index < i_num loop
+          l_index := l_index + 1;
+          if b_primes.exists(l_index) then
+            l_prime := b_primes(l_index);
+          else
+            l_prime := next(l_prime);
+            b_primes(l_index) := l_prime;
+          end if;
+        end loop;
+        return l_prime;
+    end case;
+  end nth;
+
+end prime#;
+/
\ No newline at end of file
diff --git a/test/test_blob.rb b/test/test_blob.rb
index 6d6c2c08..daecfdba 100644
--- a/test/test_blob.rb
+++ b/test/test_blob.rb
@@ -239,6 +239,10 @@ class TestBlob < Minitest::Test
     # Godep saved dependencies
     assert sample_blob("Godeps/Godeps.json").generated?
     assert sample_blob("Godeps/_workspace/src/github.com/kr/s3/sign.go").generated?
+
+    # Cython-generated C/C++
+    assert sample_blob("C/sgd_fast.c").generated?
+    assert sample_blob("C++/wrapper_inner.cpp").generated?
   end
 
   def test_vendored