diff --git a/test/attdet.py b/test/attdet.py
index c318e32..3b6e9d9 100644
--- a/test/attdet.py
+++ b/test/attdet.py
@@ -16,7 +16,7 @@
 
 import numpy as np
 
-import build.lc3 as lc3
+import lc3
 import tables as T, appendix_c as C
 
 
diff --git a/test/bwdet.py b/test/bwdet.py
index bb7dd83..88d7c8c 100644
--- a/test/bwdet.py
+++ b/test/bwdet.py
@@ -16,7 +16,7 @@
 
 import numpy as np
 
-import build.lc3 as lc3
+import lc3
 import tables as T, appendix_c as C
 
 
diff --git a/test/decoder.py b/test/decoder.py
index 4bacc23..f6a131e 100755
--- a/test/decoder.py
+++ b/test/decoder.py
@@ -21,7 +21,7 @@ import scipy.io.wavfile as wavfile
 import struct
 import argparse
 
-import build.lc3 as lc3
+import lc3
 import tables as T, appendix_c as C
 
 import mdct, energy, bwdet, sns, tns, spec, ltpf
diff --git a/test/encoder.py b/test/encoder.py
index 307d183..59490e5 100755
--- a/test/encoder.py
+++ b/test/encoder.py
@@ -21,7 +21,7 @@ import scipy.io.wavfile as wavfile
 import struct
 import argparse
 
-import build.lc3 as lc3
+import lc3
 import tables as T, appendix_c as C
 
 import attdet, ltpf
diff --git a/test/energy.py b/test/energy.py
index 13c6828..a1bc5c3 100644
--- a/test/energy.py
+++ b/test/energy.py
@@ -16,7 +16,7 @@
 
 import numpy as np
 
-import build.lc3 as lc3
+import lc3
 import tables as T, appendix_c as C
 
 ### ------------------------------------------------------------------------ ###
diff --git a/test/ltpf.py b/test/ltpf.py
index 1a852c8..4bf3e72 100644
--- a/test/ltpf.py
+++ b/test/ltpf.py
@@ -17,7 +17,7 @@
 import numpy as np
 import scipy.signal as signal
 
-import build.lc3 as lc3
+import lc3
 import tables as T, appendix_c as C
 
 ### ------------------------------------------------------------------------ ###
diff --git a/test/makefile.mk b/test/makefile.mk
index cfced65..b52b7ac 100644
--- a/test/makefile.mk
+++ b/test/makefile.mk
@@ -17,7 +17,7 @@
 TEST_DIR := test
 
 test_py:
-	$(V)cd $(TEST_DIR) && python3 setup.py && python3 run.py
+	$(V)cd $(TEST_DIR) && python3 setup.py && PYTHONPATH=build python3 run.py
 
 .PHONY: test test-clean
 
diff --git a/test/mdct.py b/test/mdct.py
index aafba3f..4e6d191 100644
--- a/test/mdct.py
+++ b/test/mdct.py
@@ -17,7 +17,7 @@
 import numpy as np
 import scipy.fft
 
-import build.lc3 as lc3
+import lc3
 import tables as T, appendix_c as C
 
 ### ------------------------------------------------------------------------ ###
diff --git a/test/sns.py b/test/sns.py
index 897ed79..1c4e54d 100644
--- a/test/sns.py
+++ b/test/sns.py
@@ -17,7 +17,7 @@
 import numpy as np
 import scipy.fftpack as fftpack
 
-import build.lc3 as lc3
+import lc3
 import tables as T, appendix_c as C
 
 ### ------------------------------------------------------------------------ ###
diff --git a/test/spec.py b/test/spec.py
index 0117d57..4be4054 100644
--- a/test/spec.py
+++ b/test/spec.py
@@ -16,7 +16,7 @@
 
 import numpy as np
 
-import build.lc3 as lc3
+import lc3
 import tables as T, appendix_c as C
 
 import bwdet as m_bwdet
diff --git a/test/tns.py b/test/tns.py
index fde7d54..18426e8 100644
--- a/test/tns.py
+++ b/test/tns.py
@@ -16,7 +16,7 @@
 
 import numpy as np
 
-import build.lc3 as lc3
+import lc3
 import tables as T, appendix_c as C
 
 ### ------------------------------------------------------------------------ ###