diff --git a/sources/libcore/concurrent/concurrent.cpp b/sources/libcore/concurrent/concurrent.cpp
index 70992cce..56880807 100644
--- a/sources/libcore/concurrent/concurrent.cpp
+++ b/sources/libcore/concurrent/concurrent.cpp
@@ -674,7 +674,10 @@ namespace cage
 
 	void currentThreadName(const String &name)
 	{
+#ifdef CAGE_DEBUG
 		const String oldName = currentThreadName_();
+#endif
+
 		currentThreadName_() = name;
 
 		if (!name.empty())
diff --git a/sources/libcore/filesystem/abstractFiles.cpp b/sources/libcore/filesystem/abstractFiles.cpp
index c47b1505..77a986cc 100644
--- a/sources/libcore/filesystem/abstractFiles.cpp
+++ b/sources/libcore/filesystem/abstractFiles.cpp
@@ -76,13 +76,6 @@ namespace cage
 			return archiveOpenZipTry(parent->openFile(inPath, FileMode(true, false)));
 		}
 
-		void walkLeft(String &p, String &i)
-		{
-			const String s = pathJoin(p, "..");
-			i = pathJoin(subString(p, s.length() + 1, m), i);
-			p = s;
-		}
-
 		void walkRight(String &p, String &i)
 		{
 			const String k = split(i, "/");
@@ -90,6 +83,13 @@ namespace cage
 		}
 
 #ifdef CAGE_DEBUG
+		void walkLeft(String &p, String &i)
+		{
+			const String s = pathJoin(p, "..");
+			i = pathJoin(subString(p, s.length() + 1, m), i);
+			p = s;
+		}
+
 		class WalkTester : private Immovable
 		{
 		public:
diff --git a/sources/libengine/graphics/shaderProgram.cpp b/sources/libengine/graphics/shaderProgram.cpp
index cea71fc3..9595476e 100644
--- a/sources/libengine/graphics/shaderProgram.cpp
+++ b/sources/libengine/graphics/shaderProgram.cpp
@@ -774,8 +774,8 @@ namespace cage
 
 	void ShaderProgram::compute(const Vec3i &groupsCounts)
 	{
-		const ShaderProgramImpl *impl = (const ShaderProgramImpl *)this;
 #ifdef CAGE_ASSERT_ENABLED
+		const ShaderProgramImpl *impl = (const ShaderProgramImpl *)this;
 		CAGE_ASSERT(boundShader == impl->id);
 #endif
 		glDispatchCompute(groupsCounts[0], groupsCounts[1], groupsCounts[2]);
diff --git a/sources/test-core/exceptions.cpp b/sources/test-core/exceptions.cpp
index c5cb3e7f..f2090bcf 100644
--- a/sources/test-core/exceptions.cpp
+++ b/sources/test-core/exceptions.cpp
@@ -117,4 +117,6 @@ void testExceptions()
 		}
 		detail::globalBreakpointOverride(true);
 	}
+
+	(void)&assertFailureFunction; // maybe unused
 }