diff --git a/third_party/lcms/src/cmscgats.c b/third_party/lcms/src/cmscgats.c
index 7df5bbc4d..49cfbbe8c 100644
--- a/third_party/lcms/src/cmscgats.c
+++ b/third_party/lcms/src/cmscgats.c
@@ -256,7 +256,7 @@ static PROPERTY PredefinedProperties[] = {
                                                    // needed.
 
         {"SAMPLE_BACKING",   WRITE_STRINGIFY},     // Identifies the backing material used behind the sample during
-                                                   // measurement. Allowed values are ?black?, ?white?, or {"na".
+                                                   // measurement. Allowed values are "black", "white", or {"na".
                                                   
         {"CHISQ_DOF",        WRITE_STRINGIFY},     // Degrees of freedom associated with the Chi squared statistic
                                                    // below properties are new in recent specs:
@@ -271,7 +271,7 @@ static PROPERTY PredefinedProperties[] = {
                                                    // denote the use of filters such as none, D65, Red, Green or Blue.
                                                   
        {"POLARIZATION",      WRITE_STRINGIFY},     // Identifies the use of a physical polarization filter during measurement. Allowed
-                                                   // values are {"yes?, ?white?, ?none? or ?na?.
+                                                   // values are "yes", "white", "none" or "na".
 
        {"WEIGHTING_FUNCTION", WRITE_PAIR},         // Indicates such functions as: the CIE standard observer functions used in the
                                                    // calculation of various data parameters (2 degree and 10 degree), CIE standard
diff --git a/third_party/lcms/src/cmstypes.c b/third_party/lcms/src/cmstypes.c
index 6cb8d4be3..e95e6d910 100644
--- a/third_party/lcms/src/cmstypes.c
+++ b/third_party/lcms/src/cmstypes.c
@@ -974,7 +974,7 @@ cmsBool  Type_Text_Description_Write(struct _cms_typehandler_struct* self, cmsIO
     len = cmsMLUgetASCII(mlu, cmsNoLanguage, cmsNoCountry, NULL, 0);
 
     // Specification ICC.1:2001-04 (v2.4.0): It has been found that textDescriptionType can contain misaligned data
-    //(see clause 4.1 for the definition of ?aligned?). Because the Unicode language
+    //(see clause 4.1 for the definition of "aligned"). Because the Unicode language
     // code and Unicode count immediately follow the ASCII description, their
     // alignment is not correct if the ASCII count is not a multiple of four. The
     // ScriptCode code is misaligned when the ASCII count is odd. Profile reading and
@@ -3091,10 +3091,10 @@ void Type_ColorantTable_Free(struct _cms_typehandler_struct* self, void* Ptr)
 //The namedColor2Type is a count value and array of structures that provide color
 //coordinates for 7-bit ASCII color names. For each named color, a PCS and optional
 //device representation of the color are given. Both representations are 16-bit values.
-//The device representation corresponds to the header?s ?color space of data? field.
-//This representation should be consistent with the ?number of device components?
+//The device representation corresponds to the header's "color space of data" field.
+//This representation should be consistent with the "number of device components"
 //field in the namedColor2Type. If this field is 0, device coordinates are not provided.
-//The PCS representation corresponds to the header?s PCS field. The PCS representation
+//The PCS representation corresponds to the header's PCS field. The PCS representation
 //is always provided. Color names are fixed-length, 32-byte fields including null
 //termination. In order to maintain maximum portability, it is strongly recommended
 //that special characters of the 7-bit ASCII set not be used.
@@ -3839,7 +3839,7 @@ void Type_Screening_Free(struct _cms_typehandler_struct* self, void* Ptr)
 // ********************************************************************************
 //
 //This type represents a set of viewing condition parameters including:
-//CIE ?absolute? illuminant white point tristimulus values and CIE ?absolute?
+//CIE 'absolute' illuminant white point tristimulus values and CIE 'absolute'
 //surround tristimulus values.
 
 static
@@ -3926,7 +3926,7 @@ void GenericMPEfree(struct _cms_typehandler_struct* self, void *Ptr)
 }
 
 // Each curve is stored in one or more curve segments, with break-points specified between curve segments.
-// The first curve segment always starts at ?Infinity, and the last curve segment always ends at +Infinity. The
+// The first curve segment always starts at -Infinity, and the last curve segment always ends at +Infinity. The
 // first and last curve segments shall be specified in terms of a formula, whereas the other segments shall be
 // specified either in terms of a formula, or by a sampled curve.
 
diff --git a/third_party/lcms/src/cmsvirt.c b/third_party/lcms/src/cmsvirt.c
index 19e0cafb1..935effc66 100644
--- a/third_party/lcms/src/cmsvirt.c
+++ b/third_party/lcms/src/cmsvirt.c
@@ -612,18 +612,18 @@ cmsHPROFILE CMSEXPORT cmsCreateXYZProfile(void)
 
 //sRGB Curves are defined by:
 //
-//If  R?sRGB,G?sRGB, B?sRGB < 0.04045
+//If  R'sRGB,G'sRGB, B'sRGB < 0.04045
 //
-//    R =  R?sRGB / 12.92
-//    G =  G?sRGB / 12.92
-//    B =  B?sRGB / 12.92
+//    R =  R'sRGB / 12.92
+//    G =  G'sRGB / 12.92
+//    B =  B'sRGB / 12.92
 //
 //
-//else if  R?sRGB,G?sRGB, B?sRGB >= 0.04045
+//else if  R'sRGB,G'sRGB, B'sRGB >= 0.04045
 //
-//    R = ((R?sRGB + 0.055) / 1.055)^2.4
-//    G = ((G?sRGB + 0.055) / 1.055)^2.4
-//    B = ((B?sRGB + 0.055) / 1.055)^2.4
+//    R = ((R'sRGB + 0.055) / 1.055)^2.4
+//    G = ((G'sRGB + 0.055) / 1.055)^2.4
+//    B = ((B'sRGB + 0.055) / 1.055)^2.4
 
 static
 cmsToneCurve* Build_sRGBGamma(cmsContext ContextID)