diff --git a/lib/symbols b/lib/symbols
index 71ade6c824..f28529c0d0 100644
--- a/lib/symbols
+++ b/lib/symbols
@@ -33,11 +33,11 @@ widetilde           decoration none
 dots              dots        none
 cdots             dots        none
 ddots             dots        none
-dotsb             dots        none
-dotsc             dots        none
-dotsi             dots        none
-dotsm             dots        none
-dotso             dots        none
+dotsb             dots        none        amsmath
+dotsc             dots        none        amsmath
+dotsi             dots        none        amsmath
+dotsm             dots        none        amsmath
+dotso             dots        none        amsmath
 ldots             dots        none
 vdots             dots        none
 
diff --git a/src/mathed/InsetMathDots.cpp b/src/mathed/InsetMathDots.cpp
index a8dcec6aa0..4c2f71fa33 100644
--- a/src/mathed/InsetMathDots.cpp
+++ b/src/mathed/InsetMathDots.cpp
@@ -12,6 +12,8 @@
 #include <config.h>
 
 #include "InsetMathDots.h"
+
+#include "LaTeXFeatures.h"
 #include "MathStream.h"
 #include "MathSupport.h"
 #include "MathParser.h"
@@ -78,4 +80,11 @@ docstring InsetMathDots::name() const
 }
 
 
+void InsetMathDots::validate(LaTeXFeatures & features) const
+{
+	if (!key_->requires.empty())
+		features.require(to_utf8(key_->requires));
+}
+
+
 } // namespace lyx
diff --git a/src/mathed/InsetMathDots.h b/src/mathed/InsetMathDots.h
index af3d26bd97..2c5b4d39eb 100644
--- a/src/mathed/InsetMathDots.h
+++ b/src/mathed/InsetMathDots.h
@@ -30,6 +30,8 @@ public:
 	void draw(PainterInfo & pi, int x, int y) const;
 	///
 	docstring name() const;
+	/// request "external features"
+	void validate(LaTeXFeatures & features) const;
 protected:
 	/// cache for the thing's height
 	mutable int dh_;
diff --git a/status.15x b/status.15x
index 64dbd2a286..7397e7cf35 100644
--- a/status.15x
+++ b/status.15x
@@ -96,6 +96,8 @@ What's new
 - The LaTeX package amscd is now loaded automatically after math diagrams
   have been created (bug 5090).
 
+- Load amsmath automatically for ams dots such as \dotsb (bug 5376).
+
 - Fix inputenc error with ligature glyphs in utf8 encoding (bug 5086).
 
 - Fix LaTeX error with deleted straight quotes in change tracking mode