diff --git a/debian/rules b/debian/rules
index de509f0be9d3..e70ed122273f 100755
--- a/debian/rules
+++ b/debian/rules
@@ -74,9 +74,9 @@ TESTMAKE=ninja $(NINJA_OPTS)
 endif
 
 ifeq (,$(findstring $(DISTRIBUTION),"focal sid"))
-PYTHON_LIBRARY=$(shell python3-config --ldflags | sed -e 's\#-L\(.*\) -L/usr/lib -l\([^ ]*\) .*$$\#\1/lib\2.so\#')
+PYTHON_LIBRARY=$(shell python3-config --ldflags | sed -e 's#-L\(.*\) -L/usr/lib -l\([^ ]*\) .*$$#\1/lib\2.so#')
 else
-PYTHON_LIBRARY=$(shell python3-config --ldflags --embed | sed -e 's\#-L\(.*\) -L/usr/lib -l\([^ ]*\) .*$$\#\1/lib\2.so\#')
+PYTHON_LIBRARY=$(shell python3-config --ldflags --embed | sed -e 's#-L\(.*\) -L/usr/lib -l\([^ ]*\) .*$$#\1/lib\2.so#')
 endif
 
 CMAKE_OPTS := \