diff --git a/Makefile b/Makefile
index 8d4b939..54e546d 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,8 @@ RUBY_VERSION = $(RUBY_MAJOR_VERSION).3
 RUBY_NAME = ruby-$(RUBY_VERSION)
 RUBY_DIR = build/$(RUBY_NAME)
 RUBY_OPENSSL_EXT_DIR = $(RUBY_DIR)/ext/openssl
-RUBY_LIB_DIR = $(RBENV_ROOT)/versions/$(RUBY_VERSION)-cryptcheck/lib/ruby/$(RUBY_MAJOR_VERSION).0
+RBENV_DIR = $(RBENV_ROOT)/versions/$(RUBY_VERSION)-cryptcheck
+RUBY_LIB_DIR = $(RBENV_DIR)/lib/ruby/$(RUBY_MAJOR_VERSION).0
 RBENV_ROOT ?= ~/.rbenv
 export LIBRARY_PATH = $(PWD)/lib
 export C_INCLUDE_PATH = $(PWD)/$(OPENSSL_DIR)/include
@@ -101,7 +102,7 @@ lib/openssl.so: $(RUBY_OPENSSL_EXT_DIR)/openssl.so
 ext: lib/openssl.so
 
 spec/faketime/libfaketime.so: spec/faketime/faketime.c spec/faketime/faketime.h
-	$(CC) -shared -fPIC $^ -o $@ -ldl -std=c99 -Werror -Wall
+	$(CC) $^ -o $@ -shared -fPIC -ldl -std=c99 -Werror -Wall
 lib/libfaketime.so: spec/faketime/libfaketime.so
 	ln -fs ../$< $@
 faketime: lib/libfaketime.so
diff --git a/spec/cryptcheck/cert_spec.rb b/spec/cryptcheck/tls/cert_spec.rb
similarity index 91%
rename from spec/cryptcheck/cert_spec.rb
rename to spec/cryptcheck/tls/cert_spec.rb
index 6d35bbe..ab95e6d 100644
--- a/spec/cryptcheck/cert_spec.rb
+++ b/spec/cryptcheck/tls/cert_spec.rb
@@ -7,7 +7,7 @@ describe CryptCheck::Tls::Cert do
 
 	describe '::trusted?' do
 		it 'must accept valid certificate' do
-			FakeTime.freeze_during Time.utc(2000, 1, 1) do
+			FakeTime.freeze Time.utc(2000, 1, 1) do
 				cert, *chain, ca = load_chain %w(ecdsa-prime256v1 intermediate ca)
 				trust            = ::CryptCheck::Tls::Cert.trusted? cert, chain, roots: ca
 				expect(trust).to eq :trusted
@@ -34,7 +34,7 @@ describe CryptCheck::Tls::Cert do
 		end
 
 		it 'must reject expired certificate' do
-			FakeTime.freeze_during Time.utc(2002, 1, 1) do
+			FakeTime.freeze Time.utc(2002, 1, 1) do
 				cert, *chain, ca = load_chain %w(ecdsa-prime256v1 intermediate ca)
 				trust            = ::CryptCheck::Tls::Cert.trusted? cert, chain, roots: ca
 				expect(trust).to eq 'certificate has expired'
@@ -42,7 +42,7 @@ describe CryptCheck::Tls::Cert do
 		end
 
 		it 'must reject not yet valid certificate' do
-			FakeTime.freeze_during Time.utc(1999, 1, 1) do
+			FakeTime.freeze Time.utc(1999, 1, 1) do
 				cert, *chain, ca = load_chain %w(ecdsa-prime256v1 intermediate ca)
 				trust            = ::CryptCheck::Tls::Cert.trusted? cert, chain, roots: ca
 				expect(trust).to eq 'certificate is not yet valid'
diff --git a/spec/cryptcheck/tls/server_spec.rb b/spec/cryptcheck/tls/server_spec.rb
index 706193c..3562d0d 100644
--- a/spec/cryptcheck/tls/server_spec.rb
+++ b/spec/cryptcheck/tls/server_spec.rb
@@ -2,7 +2,7 @@ require 'faketime'
 
 describe CryptCheck::Tls::Server do
 	before :all do
-		FakeTime.freeze Time.utc(2000, 1, 1).to_i
+		FakeTime.freeze Time.utc(2000, 1, 1)
 	end
 
 	after :all do
diff --git a/spec/faketime.rb b/spec/faketime.rb
index 6aea428..51e2a11 100644
--- a/spec/faketime.rb
+++ b/spec/faketime.rb
@@ -4,22 +4,24 @@ module FakeTime
 	extend FFI::Library
 	ffi_lib 'faketime'
 
-	def self.freeze(_)
+	def self._freeze(_)
 		#This is a stub, used for indexing
 	end
 	def self.unfreeze
 		#This is a stub, used for indexing
 	end
 
-	attach_function :freeze, [:ulong], :void
+	attach_function :_freeze, [:ulong], :void
 	attach_function :unfreeze, [], :void
 
-	def self.freeze_during(time, &block)
-		self.freeze time.to_i
-		begin
-			return block.call
-		ensure
-			self.unfreeze
+	def self.freeze(time)
+		self._freeze time.to_i
+		if block_given?
+			begin
+				return yield
+			ensure
+				self.unfreeze
+			end
 		end
 	end
 end
diff --git a/spec/faketime/faketime.c b/spec/faketime/faketime.c
index cc07088..86812fa 100644
--- a/spec/faketime/faketime.c
+++ b/spec/faketime/faketime.c
@@ -9,7 +9,7 @@ time_t frozen_time = 0;
 typedef time_t (*orig_time_f_type)(time_t*);
 orig_time_f_type orig_time = NULL;
 
-void freeze(unsigned long time) {
+void _freeze(unsigned long time) {
 	frozen_time = (time_t)time;
 	frozen = 1;
 }
diff --git a/spec/faketime/faketime.h b/spec/faketime/faketime.h
index 3ec6771..b9af8d8 100644
--- a/spec/faketime/faketime.h
+++ b/spec/faketime/faketime.h
@@ -1,2 +1,2 @@
-void freeze(unsigned long time);
+void _freeze(unsigned long time);
 void unfreeze();
diff --git a/spec/faketime/libfaketime.so b/spec/faketime/libfaketime.so
index f7b672c..5c3f3e5 100755
Binary files a/spec/faketime/libfaketime.so and b/spec/faketime/libfaketime.so differ