diff --git a/manual.md b/manual.md
index a7f6956f..f5340f0f 100644
--- a/manual.md
+++ b/manual.md
@@ -217,7 +217,7 @@ GLM relies on C++ templates heavily, and may significantly increase compilation
 #include <glm/mat4x4.hpp>             // mat4, dmat4
 #include <glm/common.hpp>             // all the GLSL common functions: abs, min, mix, isnan, fma, etc.
 #include <glm/exponential.hpp>        // all the GLSL exponential functions: pow, log, exp2, sqrt, etc.
-#include <glm/geometry.hpp>           // all the GLSL geometry functions: dot, cross, reflect, etc.
+#include <glm/geometric.hpp>          // all the GLSL geometry functions: dot, cross, reflect, etc.
 #include <glm/integer.hpp>            // all the GLSL integer functions: findMSB, bitfieldExtract, etc.
 #include <glm/matrix.hpp>             // all the GLSL matrix functions: transpose, inverse, etc.
 #include <glm/packing.hpp>            // all the GLSL packing functions: packUnorm4x8, unpackHalf2x16, etc.