diff --git a/bld/namelist_files/use_cases/sd_waccm_ma_cam4.xml b/bld/namelist_files/use_cases/sd_waccm_ma_cam4.xml
index 6fa2495972..2d34418939 100644
--- a/bld/namelist_files/use_cases/sd_waccm_ma_cam4.xml
+++ b/bld/namelist_files/use_cases/sd_waccm_ma_cam4.xml
@@ -79,10 +79,7 @@
 
 <!-- turn on clm MEGAN VOC emis -->
 <megan_mapped_emisfctrs>.false.</megan_mapped_emisfctrs>
-<megan_specifier>
- 'CH2O = formaldehyde',
- 'CO = carbon_monoxide'
-</megan_specifier>
+<megan_specifier>'CH2O = formaldehyde','CO = carbon_monoxide'</megan_specifier>
 
 <!-- History Streams -->