diff --git a/test cases/common/61 custom target source output/generator.py b/test cases/common/61 custom target source output/generator.py
index 57590bc4a..4bf5c8432 100755
--- a/test cases/common/61 custom target source output/generator.py	
+++ b/test cases/common/61 custom target source output/generator.py	
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 import sys, os
 
diff --git a/test cases/common/64 custom header generator/makeheader.py b/test cases/common/64 custom header generator/makeheader.py
index 5b175b5e0..9ef2bd5f0 100644
--- a/test cases/common/64 custom header generator/makeheader.py	
+++ b/test cases/common/64 custom header generator/makeheader.py	
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 # NOTE: this file does not have the executable bit set. This tests that
 # Meson can automatically parse shebang lines.
diff --git a/test cases/common/65 multiple generators/mygen.py b/test cases/common/65 multiple generators/mygen.py
index 06fe0321b..cd786ead1 100755
--- a/test cases/common/65 multiple generators/mygen.py	
+++ b/test cases/common/65 multiple generators/mygen.py	
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 import sys, os
 
@@ -16,4 +16,4 @@ open(outhdr, 'w').write('int func%s();\n' % val)
 open(outsrc, 'w').write('''int func%s() {
     return 0;
 }
-''' % val)
\ No newline at end of file
+''' % val)