diff --git a/backends/simd_instruction_sets.py b/backends/simd_instruction_sets.py
index cc47af67c4dde0b37701c34435aebf39f210fb5c..56ee997aeac4379e774016bd34a013907b708d27 100644
--- a/backends/simd_instruction_sets.py
+++ b/backends/simd_instruction_sets.py
@@ -33,7 +33,8 @@ def get_vector_instruction_set(data_type='double', instruction_set='avx'):
     headers = {
         'avx512': ['<immintrin.h>'],
         'avx': ['<immintrin.h>'],
-        'sse': ['<xmmintrin.h>', '<emmintrin.h>', '<pmmintrin.h>', '<tmmintrin.h>', '<smmintrin.h>', '<nmmintrin.h>']
+        'sse': ['<immintrin.h>', '<xmmintrin.h>', '<emmintrin.h>', '<pmmintrin.h>',
+                '<tmmintrin.h>', '<smmintrin.h>', '<nmmintrin.h>']
     }
 
     suffix = {