diff --git a/camel.py b/camel.py
index b697bd0d37cc63bbe4f3dea706058989a9b2acac..3ad10f07ba7498128f637b185ffbc6dea786653a 100755
--- a/camel.py
+++ b/camel.py
@@ -524,7 +524,9 @@ def waveindgen(hdr):
     if cunit.strip().lower() in {'angstroms', 'angstrom'}:
         lconvfac = 1
     if cunit.strip().lower() in {'nanometers', 'nm'}:
-        lconvfac = 1e3
+        lconvfac = 1e1
+    if cunit.strip().lower() in {'centimeters', 'cm'}:
+        lconvfac = 1e8
     if 'CD3_3' in hdr.keys():
         sclp = hdr['CD3_3']
     elif 'CDELT3' in hdr.keys():
diff --git a/samel.py b/samel.py
index bfae8bde41e0ab02d8f2ad5c5b138d880bf41181..01a50063703e656257e3e8b3b64c6dd4bbe2be53 100755
--- a/samel.py
+++ b/samel.py
@@ -369,7 +369,9 @@ def waveindgen(hdr):
     if cunit.strip().lower() in {'angstroms', 'angstrom'}:
         lconvfac = 1
     if cunit.strip().lower() in {'nanometers', 'nm'}:
-        lconvfac = 1e3
+        lconvfac = 1e1
+    if cunit.strip().lower() in {'centimeters', 'cm'}:
+        lconvfac = 1e8
     if 'CD1_1' in hdr.keys():
         sclp = hdr['CD1_1']
     elif 'CDELT1' in hdr.keys():