diff --git a/doc/specs/vulkan/chapters/interfaces.txt b/doc/specs/vulkan/chapters/interfaces.txt
index 83e97a81..334827c1 100644
--- a/doc/specs/vulkan/chapters/interfaces.txt
+++ b/doc/specs/vulkan/chapters/interfaces.txt
@@ -96,7 +96,7 @@ interface block must: match exactly, as described above. At an interface
 involving the fragment shader inputs, the presence or absence of any
 built-in output does not affect the interface matching.
 
-Any input value to a shader stage is well-defined as long as the preceeding
+Any input value to a shader stage is well-defined as long as the preceding
 stages writes to a matching output, as described above.
 
 Additionally, scalar and vector inputs are well-defined if there
@@ -165,7 +165,7 @@ order.
 
 The locations consumed by block and structure members are determined
 by applying the rules above in a depth-first traversal of the instantiated
-members as though the structure or block member were declared as in input or
+members as though the structure or block member were declared as an input or
 output variable of the same type.
 
 Any two inputs listed as operands on the same code:OpEntryPoint mustnot: be
@@ -217,7 +217,7 @@ and components 0 and 1 of the second location. This leaves components
 
 A scalar or two-component 64-bit data type mustnot: specify a
 code:Component decoration of 1 or 3.
-A code:Component decoration mustnot: be specified any type that is
+A code:Component decoration mustnot: be specified for any type that is
 not a scalar or vector.
 
 
@@ -325,7 +325,7 @@ form the _fragment input attachment interface_. These variables must:
 be declared with a type of code:OpImageType and a code:Dim operand
 of code:SubpassData.
 
-A fragment shader input variable identified with a code:InputAttachmentIndex
+A fragment shader input variable identified with an code:InputAttachmentIndex
 decoration of _i_ reads from the input attachment indicated by
 pname:pInputAttachments[_i_]. If the input variable is declared as
 an array of size N, it consumes N consecutive input attachments, starting
@@ -735,7 +735,7 @@ location of the sample corresponding to the shader invocation when using
 sample shading.
 +
 The z component of code:FragCoord is the interpolated depth value of the
-primitive, and the w components is the interpolated
+primitive, and the w component is the interpolated
 latexmath:[$\frac{1}{w}$].
 +
 The code:FragCoord decoration is only supported in fragment shaders. The
@@ -976,7 +976,7 @@ vertex processing stage, the output position is used in subsequent primitive
 assembly, clipping and rasterization operations.
 +
 Variables decorated as code:Position mustnot: be used as inputs in vertex
-shaders and are mustnot: be used in fragment or compute shaders.
+shaders and mustnot: be used in fragment or compute shaders.
 +
 code:Position must: be declared as a four-component vector of 32-bit
 floating-point values.