diff --git a/brukeropusreader/opus_data.py b/brukeropusreader/opus_data.py
index 4bc540b..0793c33 100644
--- a/brukeropusreader/opus_data.py
+++ b/brukeropusreader/opus_data.py
@@ -7,7 +7,8 @@ class OpusData(dict):
         param_key = f"{spec_name} Data Parameter"
         fxv = self[param_key]["FXV"]
         lxv = self[param_key]["LXV"]
-        npt = self[param_key]["NPT"]
+        # NPT and REAL NUMBER OF POINTS may differ
+        npt = self[spec_name].shape[0]
         x_no_unit = np.linspace(fxv, lxv, npt)
         if wavenums:
             return x_no_unit
diff --git a/setup.py b/setup.py
index 7d648c2..0a397fd 100644
--- a/setup.py
+++ b/setup.py
@@ -3,12 +3,11 @@ from distutils.core import setup
 
 setup(
     name="brukeropusreader",
-    version="1.3.3",
+    version="1.3.4",
     description="Bruker OPUS File Reader",
     author="QED",
     author_email="brukeropusreader-dev@qed.ai",
     packages=["brukeropusreader"],
-    python_requires=">=3",
     install_requires=["numpy>=1.13.3", "scipy>=0.19.1"],
     license="GPLv3",
     url="https://github.com/qedsoftware/brukeropusreader",