diff --git a/src/Tag.cc b/src/Tag.cc
index 3b7c9a5bd9..b834bad9c9 100644
--- a/src/Tag.cc
+++ b/src/Tag.cc
@@ -65,7 +65,7 @@ Tag& Tag::operator=(const Tag& other)
 	return *this;
 	}
 
-Tag& Tag::operator=(const Tag&& other)
+Tag& Tag::operator=(const Tag&& other) noexcept
 	{
 	if ( this != &other )
 		{
diff --git a/src/Tag.h b/src/Tag.h
index a1c24702c0..f10c59cd4b 100644
--- a/src/Tag.h
+++ b/src/Tag.h
@@ -82,7 +82,7 @@ protected:
 	/**
 	 * Move assignment operator.
 	 */
-	Tag& operator=(const Tag&& other);
+	Tag& operator=(const Tag&& other) noexcept;
 
 	/**
 	 * Compares two tags for equality.
diff --git a/src/logging/Tag.cc b/src/logging/Tag.cc
index d5f3f553d1..2ab2844e25 100644
--- a/src/logging/Tag.cc
+++ b/src/logging/Tag.cc
@@ -16,7 +16,7 @@ logging::Tag& logging::Tag::operator=(const logging::Tag& other)
 	return *this;
 	}
 
-logging::Tag& logging::Tag::operator=(const logging::Tag&& other)
+logging::Tag& logging::Tag::operator=(const logging::Tag&& other) noexcept
 	{
 	::Tag::operator=(other);
 	return *this;
diff --git a/src/logging/Tag.h b/src/logging/Tag.h
index 40a7b40b5f..29c7fd6cd4 100644
--- a/src/logging/Tag.h
+++ b/src/logging/Tag.h
@@ -56,7 +56,7 @@ public:
 	/**
 	 * Move assignment operator.
 	 */
-	Tag& operator=(const Tag&& other);
+	Tag& operator=(const Tag&& other) noexcept;
 
 	/**
 	 * Compares two tags for equality.
diff --git a/src/probabilistic/CardinalityCounter.cc b/src/probabilistic/CardinalityCounter.cc
index bdc9797125..710bc86d21 100644
--- a/src/probabilistic/CardinalityCounter.cc
+++ b/src/probabilistic/CardinalityCounter.cc
@@ -76,7 +76,7 @@ CardinalityCounter::CardinalityCounter(CardinalityCounter& other)
 	p = other.p;
 	}
 
-CardinalityCounter::CardinalityCounter(CardinalityCounter&& o)
+CardinalityCounter::CardinalityCounter(CardinalityCounter&& o) noexcept
 	{
 	V = o.V;
 	alpha_m = o.alpha_m;
diff --git a/src/probabilistic/CardinalityCounter.h b/src/probabilistic/CardinalityCounter.h
index 26f61591b1..a36f7aa610 100644
--- a/src/probabilistic/CardinalityCounter.h
+++ b/src/probabilistic/CardinalityCounter.h
@@ -43,7 +43,7 @@ public:
 	/**
 	 * Move-Constructor
 	 */
-	CardinalityCounter(CardinalityCounter&& o);
+	CardinalityCounter(CardinalityCounter&& o) noexcept;
 
 	/**
 	 * Constructor for a known number of buckets.