diff --git a/fortran_tests/after/quadruple.f90 b/fortran_tests/after/quadruple.f90
new file mode 100644
index 0000000..eb9822d
--- /dev/null
+++ b/fortran_tests/after/quadruple.f90
@@ -0,0 +1,9 @@
+program test_quadruple_precision
+   implicit none
+   real(16) :: r
+   complex*32 :: cmp
+
+   r = 1.0q+00
+   cmp = (1.0Q+00, 2.0Q-01)
+
+end program test_quadruple_precision
diff --git a/fortran_tests/before/quadruple.f90 b/fortran_tests/before/quadruple.f90
new file mode 100644
index 0000000..5edd84e
--- /dev/null
+++ b/fortran_tests/before/quadruple.f90
@@ -0,0 +1,9 @@
+program test_quadruple_precision
+    implicit none
+    real(16) :: r
+    complex*32 :: cmp
+
+    r = 1.0q+00
+    cmp= (    1.0Q+00,2.0Q-01)
+
+end program test_quadruple_precision
diff --git a/fortran_tests/test_results/expected_results b/fortran_tests/test_results/expected_results
index e109307..461f2c2 100644
--- a/fortran_tests/test_results/expected_results
+++ b/fortran_tests/test_results/expected_results
@@ -2265,3 +2265,4 @@ cp2k/src/xas_tdp_types.F : 728f382598e79fa0e7b3be6d88a3218fea45e19744bbe7bdaaa96
 cp2k/src/xas_tdp_utils.F : 002dfdc6e9d5979516458b6f890950bd94df49e947633a7253b46be5f3fd7d61
 cp2k/src/xc/xc_sr_lda.F : 094099ac92a6749028c004d37b7646e2af7de402ee5804de27192b56588cc7fe
 cp2k/src/xtb_ehess.F : 45fe2c022760195affb0fd5155d865b6deac896cf6e6714e772bef04afad4be2
+quadruple.f90 : a66ec6d7d8041d903a0bef18fc13caa9a50eacb1712fe614752920c144249ed7
diff --git a/fprettify/__init__.py b/fprettify/__init__.py
index d6450a3..7d5d9ab 100644
--- a/fprettify/__init__.py
+++ b/fprettify/__init__.py
@@ -241,7 +241,7 @@ class plusminus_parser(parser_re):
     """
     def __init__(self, regex):
         self._re = regex
-        self._re_excl = re.compile(r"\b(\d+\.?\d*|\d*\.?\d+)[de]" + EOL_STR, RE_FLAGS)
+        self._re_excl = re.compile(r"\b(\d+\.?\d*|\d*\.?\d+)[deq]" + EOL_STR, RE_FLAGS)
 
     def split(self, line):
         partsplit = self._re.split(line)