diff --git a/pystencils/backends/cbackend.py b/pystencils/backends/cbackend.py
index 96d9574f67e526162f9e248363f784129713265f..d198a28784934b90a1a33f4ec8d9ffadc414ee24 100644
--- a/pystencils/backends/cbackend.py
+++ b/pystencils/backends/cbackend.py
@@ -18,7 +18,7 @@ from pystencils.integer_functions import (
     int_div, int_power_of_2, modulo_ceil)
 
 try:
-    from sympy.printing.c import C11CodePrinter as CCodePrinter  # for sympy versions > 1.6
+    from sympy.printing.c import C99CodePrinter as CCodePrinter  # for sympy versions > 1.6
 except ImportError:
     try:
         from sympy.printing.ccode import C99CodePrinter as CCodePrinter